U.S. says Russia air defence systems inside Ukraine

A tube of a Kornet anti-tank guided missile, presumably delivered from Russia, is seen on a battlefield near separatist-controlled Starobesheve in eastern Ukraine October 2, 2014. REUTERS/Maria Tsvetkova

WASHINGTON (Reuters) - The United States on Wednesday accused Russia of building up air defence systems inside eastern Ukraine and of involvement in training exercises of pro-Russian rebels in breach of a European-brokered truce.

"This is the highest amount of Russian air defence equipment in eastern Ukraine since August," State Department spokeswoman Marie Harf said in a statement.