A landing ship is surrounded by the amphibious assault vehicles during the "Han Kuang" (Han Glory) life-fire drill, some 7 kms (4 miles) from the city of Magong on the outlying Penghu islands on May 25, 2017.
Taiwan forces conducted live-fire war games in its biggest annual military exercise on May 25, presided by President Tsai Ing-wen, as the island faces growing threat from its cross-strait rival China. / AFP PHOTO / SAM YEH (Photo credit should read SAM YEH/AFP/Getty Images)
US Defense Secretary James Mattis (L) and Chairman of the Joint Chiefs of Staff Joseph Dunford are seen on West Executive Drive after briefing US senators on the situation in North Korea in the Eisenhower Executive Office Building, next to the White House on April 26, 2017 in Washington, DC. / AFP PHOTO / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
An unidentified rocket is displayed during a military parade marking the 105th anniversary of the birth of late North Korean leader Kim Il-Sung in Pyongyang on April 15, 2017.
North Korean leader Kim Jong-Un on April 15 saluted as ranks of goose-stepping soldiers followed by tanks and other military hardware paraded in Pyongyang for a show of strength with tensions mounting over his nuclear ambitions. / AFP PHOTO / Ed JONES (Photo credit should read ED JONES/AFP/Getty Images)
Smoke billows following an air-strike by the Saudi-led coalition on an army arms depot, now under Shiite Huthi rebel control on May 22, 2015 east of the Yemeni capital Sanaa. The Saudi-led coalition has waged an air campaign against the Huthis since March 26 in an effort to restore the authority of Hadi, who has fled to Riyadh with members of his government. AFP PHOTO / MOHAMMED HUWAIS (Photo credit should read MOHAMMED HUWAIS/AFP/Getty Images)
Russian Foreign Minister Sergei Lavrov (R) and US Secretary of State Rex Tillerson arrive to attend a press conferece after their talks in Moscow on April 12, 2017.
Russian President Vladimir Putin on Wednesday met US Secretary of State Rex Tillerson after complaining of worsening ties with Donald Trump's administration as the two sides spar over Syria. Putin received Tillerson at the Kremlin along with Russia's Foreign Minister Sergei Lavrov after the top diplomats held several hours of talks dominated by the fallout of an alleged chemical attack in Syria.
/ AFP PHOTO / Alexander NEMENOV (Photo credit should read ALEXANDER NEMENOV/AFP/Getty Images)
405831 03: U.S. Soldiers, From The 1St Battalion, 3Rd Special Forces Group, Unload Boxes Of School Supplies At The Technical Academy Elementary School May 25, 2002 Outside Of Kabul, Afghanistan. U.S. Troops Are Helping Unicef Deliver Pre-Packaged "School-In-A-Box" Sets, Containing Pens, Pencils, Notebooks And Text Books, To 400 Local School Children. (Photo By Natalie Behring-Chisholm/Getty Images)
A China Coast Guard ship (bottom) and a Philippine supply boat engage in a stand off as the Philippine boat attempts to reach the Second Thomas Shoal, a remote South China Sea a reef claimed by both countries, on March 29, 2014. The Philippine ship finally slipped past the Chinese blockade to reach Second Thomas Shoal, where a handful of Filipino marines are stationed on a Navy vessel that has been grounded there since 1999 to assert their nation's sovereignty. AFP PHOTO / Jay DIRECTO (Photo credit should read JAY DIRECTO/AFP/Getty Images)
Bracelets bearing portraits of Syrian President Bashar al-Assad (R), his Russian counterpart Vladimir Putin (L) and Hassan Nasrallah (C) the leader of the Lebanese Shiite movement Hezbollah, are displayed at a handicrafts shop in the Syrian capital, Damascus, on February 4, 2016.
Syrian government troops moved closer to encircling rebels in the country's second city Aleppo, threatening a total siege after cutting their main supply line. / AFP / JOSEPH EID (Photo credit should read JOSEPH EID/AFP/Getty Images)
U.S. Republican presidential hopeful Donald Trump boards his plane following a rally in Vienna, Ohio, on March 14, 2016. (Brendan Smialowski/AFP/Getty Images)
QOM, IRAN: Iranian clergymen watch a Shahab-3 long-range ballistic missile fird by Iran's Revolutionary Guards in the desert outside the holy city of Qom, 02 November 2006. The Islamic republic fired its longer-range missile on exercise for the first time today as it began 10 days of war games amid a mounting standoff with the West over its nuclear programme. The hardline Revolutionary Guards fired the missiles, which have a range of up to 2,000 kilometres (1,200 miles) -- sufficient to threaten US bases in the Gulf -- during the first phase of the manoeuvres in the central desert, state television reported. AFP PHOTO/FARS NEWS (Photo credit should read -/AFP/Getty Images)
This aerial photo taken on January 2, 2017 shows a Chinese navy formation, including the aircraft carrier Liaoning (C), during military drills in the South China Sea.
The aircraft carrier is one of the latest steps in the years-long build-up of China's military, as Beijing seeks greater global power to match its economic might and asserts itself more aggressively in its own backyard.
/ AFP / STR / China OUT (Photo credit should read STR/AFP/Getty Images)