Taiwan President Tsai Ing-wen said the self-ruled island is determined to maintain the status quo in the Taiwan Strait when meeting a delegation of U.S. lawmakers on Monday, with cross-strait military tensions further heightened as the trip followed shortly on from a high-profile U.S. visit to the island earlier this month.

Calling the delegation headed by Senator Ed Markey "very important friends of Taiwan," Tsai said the self-ruled island has been working closely with its international partners amid Russia's ongoing invasion of Ukraine and following China's large-scale military exercises held around Taiwan earlier this month.

Markey told Tsai at the Presidential Office that the international community must do more to ensure peace and stability in Taiwan at this time of uncertainty, maintaining that the United States has a moral obligation to help avoid any unnecessary conflict.

Taiwan's President Tsai Ing-wen (R) and U.S. Senator Ed Markey exchange greetings at the president's office on Aug. 15, 2022, in Taipei. (Photo courtesy of Taiwan's presidential office)(Kyodo)

He also said his support for U.S.-Taiwan relations has grown stronger since he voted for the Taiwan Relations Act in 1979 when Washington switched diplomatic recognition from Taipei to Beijing. The law requires the United States to provide Taiwan with the military equipment and supplies "necessary to enable Taiwan to maintain a sufficient self-defense capacity."

Later in the day, China said it had carried out military drills around Taiwan in response to the latest move by the United States, and criticized Washington and Taipei for playing "political tricks" and undermining peace and stability in the region.

The drills follow large-scale military exercises conducted earlier this month in retaliation for a visit to the democratic island by U.S. House of Representatives Speaker Nancy Pelosi, the third-highest-ranking official in the country.

Communist-led China -- which views Taiwan as a renegade province to be reunified with the mainland, by force if necessary -- has lambasted the trip to the island by the U.S. delegation.

The Tsai administration has been trying to bolster relations with the United States in an apparent bid to counter China under the leadership of President Xi Jinping.

Chinese Foreign Ministry spokesman Wang Wenbin warned Monday that China will take "resolute and strong measures to defend national sovereignty and territorial integrity."

"The handful of U.S. politicians have been colluding with Taiwan independence separatist forces and attempt to challenge the one-China principle. They are overestimating themselves and are doomed to fail," he said at a press conference in Beijing.

The Global Times, a tabloid of the ruling Communist Party, quoted Chinese experts as saying it is the United States that is making repeated provocations that keep tensions from easing.

China and Taiwan have been governed separately since they split in 1949 as a result of a civil war.

Since 1979, Washington has committed to a one-China policy under which it recognizes the communist leadership on the mainland as the "sole legal government of China."

But the United States maintains substantive, though unofficial, exchanges with Taiwan and supplies it with billions of dollars in arms and spare parts for its defense, a constant source of friction with China.

Related coverage:

Pelosi raps China over bid to use Taiwan trip to create "new normal"

China hints at use of force to remove U.S. interference in Taiwan

China sanctions Pelosi on Taiwan visit, halts climate talks with U.S.