WASHINGTON — House congressional leaders were toiling Thursday on a delicate, bipartisan push toward weekend votes to approve a $95 billion package of foreign aid for Ukraine, Israel and Taiwan, as well as several other national security policies at a critical moment at home and abroad.

Republican House Speaker Mike Johnson this week set in motion a plan to advance the package, which has been held up since October by GOP lawmakers resistant to approving more funding for Ukraine’s fight against Russia. As the Republican speaker faced an outright rebellion from his right flank and growing threats for his ouster, it became clear that House Democrat Leader Hakeem Jeffries would have to lend help to Johnson every step of the way.

“This is a very important message we are going to send to the world this week, and I’m anxious to get it done,” Johnson said earlier Wednesday announcing his strategy.

The growing momentum for a bipartisanship dynamic, a rarity in the deeply divided Congress, brought rare scenes of Republicans and Democrats working together to assert U.S. standing on the global stage and help American allies. But it also sent Johnson’s House Republican majority into fresh rounds of chaos.

Johnson’s Republican leadership team, seizing on the opportunity to outflank hardline conservatives with Democratic support, raised the idea of quickly changing the procedural rules to make it harder to oust the speaker from office.

But ultra-conservatives reacted with fury, angrily confronting Johnson on the House floor in a tense scene on Thursday morning. Several suggested they would join the effort to oust Johnson if the rule was changed. By the afternoon, Johnson backed away from the idea.

“We will continue to govern under the existing rules,” the speaker said on the social platform X.

Meanwhile, a rare image of bipartisan statesmanship was on display as the procedural Rules committee began debate launching the steps needed to push the foreign aid package forward toward weekend voting.

The Republican chairmen of the powerful Appropriations and Foreign Affairs committees alongside their top Democratic counterparts spoke in evocative language, some drawing on World War II history, to make the case for ensuring the U.S. stand with its allies against aggressors.

Chairman Michael McCaul of the Foreign Affairs Committee cast this as a “pivotal” time in world history, comparing the current images of people fleeing the conflict in Europe to the situation in 1939 as Hitler’s Germany rose to power.

“Time is not on our side,” he told the panel.

The top Democrat on the Foreign Affairs Committee, Rep. Greg Meeks of New York, shared McCaul’s urgency: “The camera of history is rolling.”

Johnson is trying to advance a complex plan to hold individual votes this weekend on the funds for Ukraine, Israel and allies in the Asia-Pacific, then stitch the package back together.

The package would also include legislation that allows the U.S. to seize frozen Russian central bank assets to rebuild Ukraine; impose sanctions on Iran, Russia, China and criminal organizations that traffic fentanyl; and potentially ban the video app TikTok if its China-based owner doesn’t sell its stake within a year.

President Joe Biden is emphatically pushing Congress to pass the legislation to buttress what has been a cornerstone of his foreign policy — halting Russian President Vladimir Putin’s advance in Europe.