Trump's erratic Ukraine policy has empowered Putin, confusing allies and undermining U.S. credibility while escalating the conflict.- Watch Video on English Oneindia

In a bold move, former U.S. President Donald Trump has delivered his strongest verbal assault yet against Russian leader Vladimir Putin. Following

Successive US administrations have long lobbied European allies to shoulder their fair burden for joint defense, but US President Donald Trump has taken a more bottom-line driven approach to NATO, publicly questioning why the United States should pay for the defense of rich European nations.

Far from the divisive figure of domestic narratives, Trump may emerge as a transformative force in global diplomacy.

The shift would demote an office that until earlier this year had become one of the most important in the Pentagon.