President Donald Trump’s administration signaled talks with China over the first phase of a broad trade agreement are entering the final stages when the most contentious and complex issues are debated, with no guarantee that another breakdown will be averted.

The U.S. and China are close to finalizing sections of the first phase of a trade deal that President Donald Trump and China’s Xi Jinping hope to sign at a summit in Chile next month, the Office of the U.S. Trade Representative said.

President Donald Trump and China’s Xi Jinping are set to meet June 29 amid hopes they will hit the pause button in their trade war and resume the search for a longer-term peace.