WASHINGTON (AP) — The top-ranking Republican on a Senate committee that oversees the military is calling for a “generational investment†in America's defense, saying aggressive and significant spending increases are necessary to deter coordinated threats from U.S. adversaries such as Russia, Iran and China.

Sen. Roger Wicker told The Associated Press that he will seek an additional $55 billion in defense spending over the limits that were forged in limit a year ago. Wicker explained his position in global terms, saying there has “never been such a level of cooperation and coordination among an axis of aggressors" that aims to challenge U.S. dominance.

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