But many attendees at a summit in Paris worry that the risks of A.I. will be overlooked as the continent rushes to keep up with the United States and China.

To wean itself off Russian natural gas, Europe has found new sources of energy, including imports from the United States. But high costs are straining the economy.

The medals were designed by a jewelry maker owned by the French luxury conglomerate, which has declined to comment on their deterioration.

Hussain Sajwani, the founder and chairman of DAMAC Properties of Dubai, built the first Trump-branded golf course in the Middle East a decade ago.