Most of the countries do not operate the 'classic' CV aircraft any more, so having two engines tends to be a disadvantage re. purchasing and operating costs. We can recall that Sea Harrier, Crusader, A-4, A-7, (Super) Etandard were fine naval aircraft, despite only one engine. Even the F-35 has only one engine.
As for big country not liking what a small country does - Stalin withheld any support for our Yaks, Petlyakovs and Stormoviks in 1948 (plus all-encompassing embargo, spiced up with firing at border guards) when Tito said 'no' to him. Yugoslavia then bought, admitedly at bargain price, the Thunderbolts and Mosquitoes, and, later, Sabres.
There was no way for Nicaragua (under Sandinistas), Cuba (under Castro) and Chile (under Allende) to purchase spare parts for anything produced in USA.