Sen. Rand Paul is recovering from five broken ribs and bruises to his lungs, and it is unclear when he will return to Washington, aides said Sunday, signaling that injuries he sustained Friday are far more severe than initially thought. The second-term Republican senator from Kentucky and 2016 presidential candidate was attacked, allegedly by a next-door neighbor, Rene Boucher, 59, who was charged with fourth-degree assault. Paul has lung contusions, or bruises, caused by the broken ribs, Stafford said. He could not say whether one lung was bruised or both, but said Paul’s recovery could last several months.