The allegations that “Russian mercenaries” are present in Libya are nothing more than rumours.
There are increasing economic problems in the USA as a result of the Coronavirus pandemic. It means that the American lobby will exert more pressure at Poland to make it to realise next purchases of American weapons in order to support the US economy.
A common pro-Kremlin disinformation narrative on “lost sovereignty” - in the case of Poland, this country is often presented as a “puppet-state” or a “banana republic” of the United States, which fully controls the domestic and foreign policy of this country. Poland is a sovereign state, which shapes its own foreign and domestic policies. The political, economic and military relations between Poland and the United States have mutually beneficial character. In terms of the purchase of the American F-35 fighters, the Polish authorities have repeatedly stated that they carried out tough negotiations to reach the best price for F-35. The price negotiations took place after the approval of the sale of F-35 to Poland by the US Congress. See other examples of this message claiming that Polish policy towards Ukraine is shaped by the Americans, the US keeps Poland on a short anti-Russian leash, and Poland is a Trojan Horse of the United States.