Putin signs bill suspending participation in nuclear treaty

President Vladimir Putin has signed a bill suspending Russia's participation in a pivotal nuclear arms treaty.Putin's decree, released on Wednesday, formalizes Russia's departure from the 1987 Intermediate-Range Nuclear Forces treaty with the United States following Washington's withdrawal from the pact.The U.S. gave notice of its intention to withdraw from the INF in February, setting the stage for it to terminate in six months unless Moscow returns to compliance.