Trump said this weekend he would like to get U.S. companies into eastern Syria to "properly" exploit the oil fields there.
We've broken down the military might of both nations, including their soldiers, equipment, technology and economy.
The drill involves all branches of the military, as well as deployments from China and Mongolia.
Almost $600 million worth of vehicles can go a long way.
At least 25 mortar shells were fired at southern Israeli communities but with no reported injuries.
While the government has had lofty goals for the size of its armed forces, independent analysis shows the big figures disguise the reality.
Moscow claims that any Russian military hardware was looted by rebels from Ukrainian government depots.
Russia's tanks are "the best in the world," army chief says ahead of Olympic-style competition with China, India and others.
While the Taiwanese war games come during a time of deteriorating relations with China, the South China Sea has also been the site of recent tension between China and the U.S.
The head of the U.S. command in Europe asked lawmakers to consider deploying more troops and equipment to ward off Russian aggression.
President Petro Poroshenko warned that Russian-backed separatists have a vast military stockpile.
Kiev estimates tanks in rebel areas increased from 30 to 600 since 2014.
Ukraine's representative in peace talks said rebels also have extensive artillery.
Over 30 armored vehicles were recorded crossing what appears to be Luhansk city.
Russia has vowed a "highly effective" and "asymmetrical" response.
The offensive builds on over a week of ground attacks launched with Russian air support.
The host country has won first place in every discipline so far.
Tensions over Ukraine keep prominent Western heads of state away from Russian Victory Day parade.
The tank manufacturers insist the tank was supposed to stall.
The Houthis' recent gains in Aden have happened despite a week of air strikes.