An Israeli-American businessman, a former State Department official and a decorated Green Beret pitched up in the Democratic Republic of Congo in March with a message for President Felix Tshisekedi from the Trump administration.

Two days later, they fled the country in fear of arrest.

The three envoys had come with an offer from Washington: Release three American prisoners on death row and in return U.S. President Donald Trump will accept your minerals-for-security proposal.