Tanks are the apex predator on Ukraine's battlefields, with modern Western tanks facing off against Soviet-designed relics. But which country has the power?
US Central Command
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US Air Force/Airman 1st Class Dwane R. Young
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American warships and bases in the Pacific are within reach of an increasingly worrying threat, a missile force unlike anything the US has faced in combat.
China's ever-expanding Rocket Force is armed with thousands of missiles with ominous nicknames such as "carrier killers" and the "Guam Express."