US' planned $1.4bn arms sale to Taiwan irks China
The move has angered China, which claims the self-ruled Taiwan as its territory.
The US State Department said the weapons package comprises of technical support for early warning radar, high speed anti-radiation missiles, torpedoes and missile components.
US arms sale to Taiwan
China opposes Taiwan's self-rule
Beijing considers Taiwan a wayward province and claims its Chinese territory under its "One China" policy. China has for decades opposed Taiwan's self-rule and has attempted to internationally isolate it by making other countries accept the "One China" policy. Democratic Taiwan opposes autocratic China's rule.
Arms sale: Trump's recent flip-flop over Taiwan
The arms sale is the latest in a series of Trump's flip flops on Taiwan.
In December, following his election victory, Trump broke protocol by speaking to Taiwanese President Tsai, irking China.
He then questioned the "One-China Policy" but later accepted it.
After meeting China's President Xi in April, Trump rejected Tsai's suggestion of another phone conversation, indicating he's casting aside Taiwan over China.
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US: Despite arms sale, will continue supporting "One-China policy"
US State Department spokeswoman Heather Nauert said the arms sale demonstrates US "support for Taiwan's ability to maintain a sufficient self-defense capability."
However, this doesn't change Washington's long-standing stance accepting the "One-China policy," which recognizes Beijing, not Taipei.
Ed Royce, the Republican chairman of the House Foreign Affairs Committee, welcomed the sale, calling it long-overdue.
The weapons would upgrade the Taiwanese military's existing platforms.
Taipei says arms sale strengthen US-Taiwan security ties
"(The arms sale) increases Taiwan's confidence and ability to maintain the status quo of peace and stability across the Taiwan Strait," said Taiwanese President Tsai Ing-wen.
Tsai said Taiwan remains committed towards having constructive dialogue with China to promote positive relations.
The Taiwanese defense ministry said the sale would strengthen the US-Taiwan security partnership, contributing to regional stability.
China says American arms sale undermines Sino-US mutual trust
China's ambassador to Washington Cui Tiankai said the arms sale to Taiwan threatens to undermine US-Chinese relations.
China has previously also protested and reacted angrily towards US arms sales to Taiwan.