Republican lawmakers are slamming the Trump administration’s decision to halt some U.S. missile and munitions shipments to Ukraine, warning it risks emboldening Russia at a pivotal point in the war.Republican Rep. Brian Fitzpatrick, co-chair of the Congressional Ukraine Caucus, said he would be “aggressively looking into this matter” following the White House’s acknowledgment that the Pentagon froze deliveries of critical air defense weapons due to concerns over shrinking U.S. stockpiles.“We must build up our own defense industrial base here in the U.S. while simultaneously providing the needed assistance to our allies who are defending their freedom from a brutal invading...