A veteran envoy of President Vladimir Putin has resigned over the Ukraine war and left Russia with no intention to return, two sources said on Wednesday, the first senior official to break with the Kremlin since Putin launched his invasion a month ago. The Kremlin confirmed that Anatoly Chubais had resigned of his own accord. Chubais was one of the principal architects of Boris Yeltsin’s economic reforms of the 1990s and was Putin’s boss in the future president’s first Kremlin job.