Trump's former national security advisor expressed that he's "very worried" for the future of Washington support to Ukraine's military because Trump as the Republican frontrunner "doesn't have any inclination" to support Kiev.

Already the past months have witnessed a string of setbacks and negative news for the Zelensky government. Most recently there's an open conflict between the Ukrainian president and his Commander-in-Chief of Ukraine's armed forces, Gen. Valerii Zaluzhny. Zaluzhny wrote in a new CNN op-ed, "We must contend with a reduction in military support from key allies, grappling with their own political tensions."

So hawks like Bolton want to see the next president stay muscular on Ukraine support, but the fear is that Trump has essentially given up on the Ukrainians, given the battlefield situation is already clearly going Russia's way, also given Ukraine's well-known and widespread corruption. Trump on the campaign trail has vowed to negotiate an end to the war within "24 hours". Watch Bolton rip his former boss in the below: