The rising tensions following her trip, however, have created anxiety for many countries in the region, said a senior Asian diplomat, who spoke on the condition of anonymity to describe private conversations. The uncertainties surrounding the U.S.-China relationship are a significant cause for concern for countries in the region, the diplomat said, pointing to the recent Association of Southeast Asian Nations foreign ministerial meeting in Cambodia, the first in-person meeting of the group in three years, where the agenda was “hijacked” by the escalating tensions between U.S. and China.