By Jeff Mason, Patricia Zengerle and Richard Cowan WASHINGTON (Reuters) -The United States is running out of time and money to help Ukraine fight its war against Russia, White House officials warned on Monday.

Russia has begun to stockpile missiles to replenish its strategic reserve of nuclear-capable weapons, Ukrainian Air Force spokesman Yuriy Ihnat told Ukrainian TV broadcasters on Dec. 4.

NATO’s secretary general just advised Ukraine’s allies to be prepared for “bad news” in the war against Russia. Jens Stoltenberg, chief of the North Atlantic Treaty Organisation, had a rather pessimistic message for Kyiv’s supporters in the West,