US President Joe Biden said talks with Chinese counterpart Xi Jinping had yielded progress in repairing strained ties in the bilateral relationship, hailing agreements to restore high-level military communications, combat fentanyl and open a dialogue over artificial intelligence.

“I believe they were some of the most constructive and productive discussions we’ve had,” Biden said at a press conference Wednesday, following a summit aimed at repairing a bilateral relationship under intense strains. “We’ve made some important progress, I believe.”