Two leading Senate Republicans responsible for foreign policy disagree about whether Russian-linked cyberattacks against Democratic campaigns amount to an “act of war.”

Sen. John McCain, R-Ariz., the Republican nominee for president in 2008 and chairman of the Armed Services Committee, dubbed the cyberattacks an “act of war” last week and pressed the point with U.S. intelligence officials Thursday. But Senate Foreign Relations Chairman Sen. Bob Corker, R-Tenn., whose committee has jurisdiction over the State Department, thinks that’s an overstatement given how cyberattacks are “commonplace” even among U.S. allies.