NATO foreign ministers will discuss how to put military support for Ukraine on a long-term basis, reports "Reuters".
A €100bn five-year fund proposal is being considered and a plan seen as a way to " Trump Resistant" aid to Kyiv.
NATO Secretary General Jens Stoltenberg's proposals would give the alliance a more direct role in coordinating the delivery of arms, ammunition and equipment to Ukraine as it fights Russia's invasion, diplomats say.
The plans will be discussed during a two-day meeting in Brussels to mark the 75th anniversary of NATO's founding and prepare for the alliance's leaders' summit in July in Washington.
"We need to change the dynamics of our support", Stoltenberg said upon his arrival at the meeting.
"We must provide reliable and predictable security assistance to Ukraine in the long term, so that we rely less on voluntary contributions and more on NATO commitments. "Less short-term proposals and more multi-year promises," he insisted.
Stoltenberg indicated that ministers would discuss how NATO could take more responsibility for coordinating military equipment and training for Ukraine. However, he declined to confirm the funding levels and clarified that the aim was for a decision to be made at the summit in July.
Under the plans, NATO will take over some of the coordination work from a US-led ad hoc coalition known as the "Rammstein" group. - a move partly aimed at preventing a possible reduction in US support should Donald Trump return to the White House, diplomats said.
Until now, NATO has focused on non-lethal aid to Ukraine because of concerns that a more direct role could escalate tensions with Russia. Alliance members have provided billions of dollars worth of arms on a bilateral basis.
Diplomats have indicated that there is a growing view within NATO that it is time to put military aid to Ukraine on a more sustainable footing, and that the Alliance is in the best position to do so.
Some have noted that Russian President Vladimir Putin's threats to view various steps taken by NATO allies as escalating -- such as the provision of tanks and other advanced weapons systems -- have not led to retaliation against them.
Yesterday US Secretary of State Anthony Blinken, who will attend the meeting in Brussels, said NATO was considering measures that could serve as a "necessary bridge" to the membership of Ukraine in the Alliance.
NATO has said that Ukraine cannot join while it is at war with Russia, but that it will become a member at some point.
"Ukraine will become a member of NATO. The question is not if, but when," Stoltenberg emphasized today.
Diplomats have warned that discussions on the proposal are at an early stage and it is not clear whether the 100 billion euro amount will be accepted or how it will be financed. NATO decisions require consensus among all 32 members of the Alliance.
"A fund of 100 billion looks very optimistic," noted a diplomat.