Putin orders Russia to respond after US missile test

President Vladimir Putin ordered the Russian military on Friday to work out a quid pro quo response after the test of a new U.S. missile banned under a now-defunct arms treaty.In Sunday's test, a modified ground-launched version of a U.S. Navy Tomahawk cruise missile accurately struck its target more than 500 kilometers (310 miles) away.The test came after Moscow and Washington withdrew from the 1987 Intermediate-range Nuclear Forces (INF) Treaty.