Politicians and campaigners are urging Germany to use the lessons of its own reunification to help bring North and South Korea together, but Berlin is in no rush to take up the challenge.

A second summit between U.S. President Donald Trump and North Korean leader Kim Jong Un planned for later this month has raised hopes for lasting peace on a peninsula divided since war there ended in a truce more than 65 years ago.

Reflecting that optimism, diplomats, politicians and foreign policy experts say Germany, which has an embassy in Pyongyang, should be exploring back channels for talks, offering advice on treaty negotiations, and promoting dialogue. But instead, in their opinion, it is falling short.