US

Police officers point their weapons at demonstrators protesting against the shooting death of Michael Brown in Ferguson, Missouri...Police officers point their weapons at demonstrators protesting against the shooting death of Michael Brown in Ferguson, Missouri August 18, 2014. Police fired tear gas and stun grenades at protesters on Monday after days of unrest sparked by the fatal shooting of unarmed black teenager Michael Brown by a white policeman. REUTERS/Joshua Lott (UNITED STATES - Tags: CRIME LAW CIVIL UNREST)

Joshua Lott/Reuters

Police officers aim their weapons at demonstrators, having fired tear gas and stun grenades at protesters in Ferguson, Missouri. 

A military honor guard prepares for US Chief of Naval Operations Admiral Jonathan Greenert's visit with Commander in Chief of The People's Liberation Army (PLA) Navy Admiral Wu Shengli at a welcoming ceremony at the PLA Navy headquarters outside of Beijing, China, 15 July 2014.  For the first time since 1971 China's navy participated alongside the US navy in Rim of the Pacific naval exercises last week.

Stephen Shaver/EPA

A military honour guard prepares for US chief of naval operations Jonathan Greenert’s visit with commander-in-chief of The People’s Liberation Army (PLA) Wu Shengli at a welcoming ceremony at the PLA navy headquarters outside of Beijing, China

A Chinese woman adjusts the Chinese national flag near U.S. national flags before a Strategic Dialogue expanded meeting that's part of the U.S.-China Strategic and Economic Dialogue at the Diaoyutai State Guesthouse in Beijing, Thursday, July 10, 2014.

Ng Han Guan/AP

The US and Chinese national flags are prepared ahead of a meeting that forms part of the US-China Strategic and Economic Dialogue at Diaoyutai State Guesthouse in Beijing on Thursday.

University of Utah image of a map of the northern sky showing the "hot spot" where scientists detected an unusual concentration of high energy cosmic rays. PRESS ASSOCIATION Photo. Issue date: Tuesday July 8, 2014. A mysterious "hot spot" in the sky is emitting unusual numbers of powerful cosmic rays, say scientists. The discovery may shed new light on the origin of ultra-high energy cosmic rays, which still cannot be fully explained. The hot spot is centred two hand-widths below the "handle" of the Big Dipper, or Plough, an arrangement of seven stars within the Great Bear constellation.

Ben Stokes/University of Utah/PA

University of Utah image of a map of the northern sky showing the ‘hot spot’ where scientists say they are detecting an unusual concentration of high energy cosmic rays

A monsoon lightning storm strikes over the Mandalay Bay Resorts and Casino and Luxor hotels in Las Vegas, Nevada late July 7, 2014. Monsoon storms are forecast for the the rest of the week in the Nevada and Arizona states.  The Luxor Sky Beam can be seen shining into the sky from the top of the hotel's pyramid structure.

Gene Blevins/Reuters

A monsoon lightning storm strikes over the Mandalay Bay Resorts and Casino in Las Vegas, Nevada. Monsoon storms are forecast for the rest of the week in Nevada and neighbouring Arizona.

An antique car drives down Main street during a July Fourth parade in the village of Barnstable, Massachusetts July 4, 2014. Barnstable, which is located on Cape Cod in Massachusetts and was first settled in 1639, is celebrating its 375th anniversary in 2014.

Mike Segar /Reuters

An antique car drives down Main street during a July Fourth parade in the village of Barnstable, Massachusetts. Barnstable, which is located on Cape Cod in Massachusetts and was first settled in 1639, is celebrating its 375th anniversary

A man crosses a flooded Highway 64 as wind pushes water over the road as Hurricane Arthur passes through Nags Head, N.C., Friday, July 4, 2014.

Gerry Broome/AP

A man crosses the flooded Highway 64 as wind pushes water over the road as Hurricane Arthur passes through Nags Head, North Carolina on Friday morning

Wyatt Smith of Rexburg, Idaho, slides in the dirt as he pulls down a steer for a time of 4.3 seconds during the steer wrestling competition at Greeley Stampede Arena on Tuesday, July 1, 2014, in Greeley, Colo.

Greeley Tribune/Jim Rydbom/AP

Wyatt Smith of Rexburg, Idaho, slides in the dirt as he pulls down a steer in a time of 4.3 seconds during the steer wrestling competition at Greeley Stampede Arena in Colorado

A protester dressed as a copy of the Bible joins groups demonstrating outside the U.S. Supreme Court in Washington June 30, 2014. The U.S. Supreme Court on Monday ruled that business owners can object on religious grounds to a provision of U.S. President Barack Obama's healthcare law that requires closely held companies to provide health insurance that covers birth control.

Jonathan Ernst/Reuters

A protester dressed as a copy of the Bible joins groups demonstrating outside the US Supreme Court in Washington. The court on Monday ruled that business owners could object on religious grounds to a provision of President Barack Obama’s healthcare law that requires closely held companies to provide health insurance that covers birth control

U.S. Marines prepare to maneuver their AAVs (Amphibious Assault Vehicles) following the joint U.S.-Philippines naval exercise, dubbed Cooperation Afloat Readiness and Training (CARAT), Monday, June 30, 2014 at the Naval Education and Training Center at San Antonio township, Zambales province in northwestern Philippines. More than 100 Filipino and U.S. Marines in assault amphibious vehicles conducted a mock assault on imaginary enemies in military drills Monday on a beach in northwestern Philippines fronting the South China Sea, where Manila is locked in a territorial dispute with China.

Bullit Marquez/AP

US marines prepare to manoeuvre their AAVs (Amphibious Assault Vehicles) following the joint US-Philippines naval exercise, dubbed Co-operation Afloat Readiness and Training (CARAT), on Monday, at the Naval Education and Training Center at San Antonio township, Zambales province, in northwestern Philippines

An anti-US protester dressed like the St...An anti-US protester dressed like the Statue of Liberty stands next to a giant mock US flag during a protest near the Malacanang palace in Manila on April 29, 2014, as US President Barack Obama's visit to the capital winds down. The protesters were protesting against the newly-signed defense agreement between the US and the Philippines, with President Obama ending an Asian tour April 29 with a warning to China against using force to resolve territorial disputes, and an "ironclad" promise of military support for the Philippines.     AFP PHOTO/TED ALJIBETED ALJIBE/AFP/Getty Images

Ted Aljibe/AFP

An anti-US protester dressed like the Statue of Liberty stands next to a giant mock US flag during a protest near the Malacanang palace in Manila, as US President Barack Obama‘s visit to the capital winds down. The protesters were protesting against the newly-signed defense agreement between the US and the Philippines. 

A Filipino activist holds a slogan near the Malacanang presidential palace in Manila, Philippines, Monday April 28, 2014 during a rally to oppose the Enhanced Defense Cooperation Agreement between the Philippines and U.S. The U.S. military will have greater access to bases across the Philippines under the new 10-year agreement signed today in conjunction with U.S. President Barack Obama's visit and seen as an effort by Washington to counter Chinese aggression in the region.

Aaron Favila/AP

An activist holds a placard near the Malacañang presidential palace in Manila, during a rally opposing the Enhanced Defense Co-operation Agreement between the Philippines and US

U.S. President Obama walks with Japan's Emperor Akihito and his wife Empress Michiko past an honour guard with Japan and U.S. flags during an official arrival ceremony at the Imperial Palace in Tokyo...U.S. President Barack Obama walks with Japan's Emperor Akihito (3rd L) and his wife Empress Michiko (L) past an honour guard with Japan and U.S. flags during an official arrival ceremony at the Imperial Palace in Tokyo April 24, 2014. Obama will use a state visit to Japan on Thursday to try to reassure Asian allies of his commitment to ramping up U.S. engagement in the region, despite Chinese complaints that his real aim is to contain Beijing's rise. REUTERS/Jim Watson/Pool

Jim Watson/Reuters

US president Barack Obama with Japan’s emperor Akihito and empress Michiko pass an honour guard during an arrival ceremony at the Imperial Palace in Tokyo 

Hoover Dam, a concrete arch-gravity dam in the Black Canyon of the Colorado River on the border between the US states of Arizona and Nevada. Hoover Dam ,finished in 1936, impounds Lake Mead, the largest reservoir in the United States by volume. The dam's generators provide power for public and private utilities in Nevada, Arizona, and California. Hoover Dam is a major tourist attraction; nearly a million people tour the dam each year.

Joe Klamar/AFP

The sun rises over the Hoover Dam, a concrete arch-gravity dam in the Black Canyon of the Colorado River on the border between the US states of Arizona and Nevada. The Hoover Dam was finished in 1936 and impounds Lake Mead, the largest reservoir in theUS by volume.

Filipino activists hold paper mache skulls  painted with US flags as they march outside the US embassy in Manila, Philippines on Monday in a rally condemning the upcoming visit of US President Barack Obama to the country. Activists also called for an end to the presence of US troops in the country and the Visiting Forces Agreement (VFA).

Dennis M. Sabangan/EPA

Filipino activists wear painted skull masks at a march outside the US embassy in Manila, Philippines, on Monday to condemn an upcoming visit by US President Barack Obama. Activists also called for an end to the presence of US troops in the country and the visiting forces agreement.

Largest Freefall Formation world record attempt in Arizona USA...epaselect epa04150210 222 skydivers from World Team attempt to break the world record for the Federation Aeronautique Internationale (FAI) Largest Sequential Freefall Formation attempt at Skydive Arizona in Eloy, Arizona, USA, 01 April, 2014.

Roy Dabner/EPA

222 skydivers from World Team attempt to break the world record for the Federation Aeronautique Internationale (FAI) Largest Sequential Freefall Formation attempt at Skydive Arizona in Eloy, Arizona, US on Monday. 

Lee Montgomery sits and waits to sign up for health care insurance at the business office of Parkland Hospital in Dallas, Monday. According to Montgomery, he as tried several times to sign up for private heath insurance in the online markets created by President Obama's heath care law, but has been unable to so he came to Parkland for face to face help.

LM Otero/AP

Lee Montgomery waits to sign up for healthcare insurance at the office of Parkland Hospital in Dallas, on Monday. Mr Montgomery says he has tried and failed several times to sign up for private heath insurance in the online markets created by President Barack Obama’s healthcare law, so has opted to sign up in person instead.

Amphibious assault vehicles of the South Korean Marine Corps throw smoke bombs as they move to land on shore during a U.S.-South Korea joint landing operation drill in Pohang...Amphibious assault vehicles of the South Korean Marine Corps throw smoke bombs as they move to land on shore during a U.S.-South Korea joint landing operation drill in Pohang March 31, 2014. The drill is part of the two countries' annual military training called Foal Eagle, which began on February 24 and runs until April 18.  North Korea declared a no-sail warning on Monday for areas off its west coast near a disputed border with South Korea and has notified the South that it will conduct firing drills, a South Korean government official said. The warning comes amid heightened tensions surrounding the North after the U.N. Security Council condemned Pyongyang for its mid-range missile launches last week, just as the leaders of South Korea, Japan and the United States met to discuss the North's arms programme.

Kim Hong-Ji/Reuters

Amphibious assault vehicles of the South Korean Marine Corps throw smoke bombs as they land onshore during a US-South Korea joint landing operation drill in Pohang. The drill is part of the two countries’ annual military training called Foal Eagle, which began on February 24 and runs until April 18.

U.S. President Barack Obama waves as he leaves Rome's airport...U.S. President Barack Obama waves as he leaves Rome's airport March 28, 2014. REUTERS/Giampiero Sposito  (ITALY - Tags: POLITICS)

Giampiero Sposito/Reuters

U.S. President Barack Obama waves as he leaves Rome‘s airport. 

Wind-driven waves crash on a sea wall in Scituate, Mass., Wednesday, March 26, 2014. Cape Cod and the islands were expected to bear the brunt of the spring storm that struck full force Wednesday. The storm could drop up to 10 inches of snow.

Michael Dwyer/AP

Wind-driven waves crash on a sea wall in Scituate, Massachusetts. Cape Cod and the islands were expected to bear the brunt of the spring storm that struck full force Wednesday. The storm could drop up to 10 inches of snow.