NATO's plan to Trump-proof Ukraine aid shows just how worried US allies are about the future of American leadership

• NATO's secretary general is proposing a plan for the alliance to control future aid packages.
• The plan would have the US step aside from leading the group that coordinates weapons deliveries to Ukraine.
• A potential second Trump term raises concerns about the security of assistance to Ukraine. 

NATO's secretary general has a plan to give the alliance control of the group supplying Ukraine with weapons — a job currently held by the US.