The US dollar is facing a serious threat as a reserve currency due to aggressive sanctions and heightened partisanship, shaking foreigners' faith in the currency. Washington's use of sanctions and partisanship are contributing to this shift, with warnings of a global liquidity withdrawal and potential impact on US equities. Morgan Stanley and experts highlight the risks of a 'dollar regime shift' with factors such as de-dollarization efforts, deteriorating relations with China, and the impact of US sanctions on Russia accelerating this shift.