New Delhi, May 18 -- Taiwan's president on Sunday stressed that arms purchases from the United States are "the most important deterrent" of regional conflict and instability, after President Donald Trump called into question continued U.S. support of Taiwan following his visit to China.

U.S. arms sales to Taiwan and security cooperation between the two sides are not only governed by law but also a catalyst for regional peace and stability, President Lai Ching-te said in a statement.

"We thank President Trump for his continued support for peace and stability across the Taiwan Strait since his first term, including the continuous increase in the scale and amount of arms sales to Taiwan," he said.

His statement came days after Trump raise...