What happens if US withdraws from Nato and United Nations?

Elon Musk has supported a call for the US to withdraw from the North Atlantic Treaty Organisation (Nato) and the United Nations (UN). This has sparked fear that the Trump administration, who has been putting ‘America First’, would abandon Europe and its other allies. However, such a move will also spell trouble for Washington in global politics

What happens if US withdraws from Nato and United Nations?
Elon Musk has supported a call for the US to withdraw from the North Atlantic Treaty Organisation (Nato) and the United Nations (UN). This has sparked fear that the Trump administration, who has been putting ‘America First’, would abandon Europe and its other allies. However, such a move will also spell trouble for Washington in global politics