Lyse Doucet, the BBC's chief international correspondent, stated that President Donald Trump's approach to foreign policy has shaken the world order more profoundly than any U.S. president since World War II. Doucet's assessment comes amid ongoing debates about the long-term implications of Trump's "America First" policies and his challenges to established international norms and alliances.

Trump's actions, including withdrawing from international agreements such as the Paris Climate Accord and the Iran nuclear deal, have been cited as examples of his departure from traditional diplomatic practices. His administration also initiated trade disputes with countries including China and members of the European Union, raising concerns about the stability of the global trading system.

In a speech early in his presidency, Trump invoked the 19th-century doctrine of "manifest destiny," which Doucet noted as indicative of his administration's assertive approach to foreign policy. This approach has included expressing interest in acquiring Greenland and questioning the value of long-standing alliances like NATO. "We have to have it," Trump reportedly said regarding Greenland, reflecting a sentiment that some observers view as a challenge to established international norms.

Critics of Trump's foreign policy argue that his actions have undermined U.S. credibility and weakened international cooperation on critical issues. Supporters, however, contend that his policies have prioritized American interests and forced other nations to re-evaluate their relationships with the United States. They argue that Trump's approach has been necessary to address what they see as unfair trade practices and disproportionate burdens on the U.S.

The implications of Trump's foreign policy decisions continue to be debated among policymakers and experts. Some analysts suggest that his actions may lead to a realignment of global power dynamics, while others express concern about the potential for increased instability and conflict. The long-term effects of Trump's presidency on the international order remain to be seen.