US lawmakers are determined to approve more aid money and weapons for Ukraine’s defense against Russia, two senior Democrats said on Sunday.

Sen. Tim Kaine (D., Va.) said the work will begin Monday and already has broad support in Congress. The bill is so important because it is essential not only for Ukraine, but also for preserving global security, said Sen. Robert Menendez (D., NJ), chairman of the Senate Foreign Relations Committee, in an interview with NBC News.

“We shouldn’t wait,” Kaine said on CBS’ “Face the Nation.” “My congressional colleagues on both sides, with very few exceptions, understand how important this is. There’s quite a bit of bipartisan will on an aid package for Ukraine.

The United States and its allies are now shipping large quantities of heavy weapons to Ukraine, including more advanced Western systems to supplement the Soviet-era small arms and weapons that were shipped to Ukraine before. the start of the invasion.

These expeditions aim to support kyiv in the next decisive phase of the war in the coming weeks, but also to arm the country in a conflict that could last for months or more.

Outrage over alleged Russian atrocities has recently prompted calls for more aggressive assistance. President Biden more than doubled the size of the latest funding request to Congress. On Thursday, he asked for $33 billion to fund more weapons and provide longer-term assistance to Kyiv, after initial funding of $13.6 billion for Ukraine to help cover the first two months of the war has been almost exhausted.

Rep. Michael McCaul (R., Texas) told ABC’s “This Week” that the aid could help Ukrainians go on the offensive and push Russian forces out of Ukraine’s eastern provinces, which could be decisive.

If Ukraine ultimately succeeds, then “others watching what’s happening in Ukraine will have to think twice,” Senator Menendez said. He called Russian President Vladimir Putin “the butcher of Moscow” and said “the ability to not have to send our sons and daughters into battle is priceless.”

“I think we will do what it takes to see Ukraine win, because it’s not just about Ukraine. This is about the international order,” he added.