“Friendly” banks and regimes are ones that are compliant with so called international standards primarily set by the USA. These swap lines are only extended to a very limited number of countries, all of whom are extremely compliant. I don’t agree really with the terminology of “bullying” but from a certain perspective it could be viewed this way, since these swap lines won’t be extended to non compliant jurisdictions - all of whom are required by a complex web of market dynamics plus regulatory pressure to use USD to trade on international markets. Of course another way to view this is each state body is free to choose on the international market who and how to exchange with, but that the marketplace puts powerful restrictions on what is permissible to access things such as swap lines for emergency funding.