TOI correspondent from Washington: In the span of a few days, US President Donald Trump has torn up a prospective peace deal with Iran and aggravated fights with Nato allies, raising fresh questions about whether the post-World War II order, painstakingly assembled over eight decades, is being dismantled by presidential whim and social-media impulse.

Trump opened new wounds and rubbed salt in others.

TOI correspondent from Washington: In the span of a few days, US President Donald Trump has torn up a prospective peace deal with Iran and aggravated fights with Nato allies,…