① The Iranians shot down a $200ish million dollar recon drone. ② The Iranians doubled down on their Syrian and Yemeni operations. ③ The Iranians threw a bunch of ordinance at Saudi oil infrastructure, taking more daily oil supply offline than any attack at any time in history. ④ The Iranians deployed forces to crack down on anti-Iranian protests in Iraq. ⑤ The protesters broke into the US Embassy compound in Baghdad on Dec. 31, 2019.

If he invaded Iran when one of the above happened + he stopped the trade war with the term suggested on June 2019 + he didn't ordered "all US troops out of northern Syria" on October 2019 + he didn't sell advanced arms (see below) to Taiwan even after the CCP warned on July 2019 the sale was violating "one China" policy + he didn't initiate killing off Huawei / Tsinghua Unigroup / SMIC + he didn't persuade India not to participate in China's BCIM Economic Corridor project during the second Belt and Road Forum in 2019;

there would have been no pandemic + the GOP didn't send out the stand down orders to their operatives during 2020 election + CIA and the CCP's MSS didn't interfere with DRE voting systems on said election.

Taiwan's defense system upgrade during 2018-2019: ① M1A2T Abrams tanks, ② MK-48 Mod 6 Advanced Technology Heavy Weight Torpedoes, and ③ THAAD systems disguised as the upgraded version of Taiwan's Sky Bow system

Some people criticize the US administration's arming Taiwan, but I think it was a proper move after the CCP built artificial islands in the South China Sea, a.k.a the symbol of its revisionism + and after the CCP successfully incited a colour revolution in South Korea during 2015 and 2016. (Now, the current administration in S. Korea is hyper-pro-Beijing.)