Singapore (CNN) Nearly five hours of unprecedented and surreal talks between US President Donald Trump and North Korea's Kim Jong Un culminated on Tuesday with fulsome declarations of a new friendship but just vague pledges of nuclear disarmament.

For Trump, that amounted to a triumphant outcome in his extraordinary gamble with the rogue kingdom's despotic leader. But there were scant details on what new commitments had been secured from Kim, even as Trump announced he would end the regular military exercises the US conducts with South Korea.