Military ties with China are the worst in 40 years, Taiwan's defense minister has said.
Chiu Kuo-cheng also warned China would be able to invade the island by 2025.
His comments came after China sent "a large number" of military aircraft into Taiwan's air defense zone for four consecutive days.
Taiwan considers itself a free country. Beijing, however, sees Taiwan as its independent state.
It has not ruled out the possibility of using force to successfully reunite the island.
"By 2025, China will move closer to the possibility of a full-fledged conflict. It has the potential now, but it will not start a war easily, considering many other factors," Chiu Kuo-cheng said as the Taipei parliamentary committee considered a multi-billion dollar defense bill to build missiles and warships.
Taiwan seceded from mainland China when the communists took power in 1949.
Analysts have warned that Beijing is increasingly concerned that the Taiwanese government is heading towards a formal declaration of independence and seeks to prevent its President Tsai Ing-wen from taking any action in that direction.
Several Western Taiwanese allies have expressed concern over China's clear demonstration of its military might in recent days.
However, US President Joe Biden said his Chinese counterpart Xi Jinping had agreed to abide by the "Taiwan agreement".
Mr. Biden appeared to signal Washington's long-standing policy of a "single China" that recognizes China instead of Taiwan.
