My point is a country cannot invade itself. Chechnya is part of Russia the same way as Texas is part of USA.

>Republic accepted the American offer of annexation in a referendum.

A bit like Crimea then.

You’d better open Wikipedia or something to find at least basic facts, because what you are saying is 100% not correct. Chechnya was not a political entity on the same level as Ukraine and under Soviet constitution could not leave the union. It was an autonomy within Russia and dissolution of USSR did not automatically grant it independence. Moreover, in 1991-1992 the political entity was called differently and was replaced officially by two regions, one of them being Chechnya, only later. So called “invasions” were in fact a civil war between separatists on one side and loyalists and Russian army on the other side in 1994 and counter-terrorist operation in 1999 (because that was after Beslan, Russian 9/11).

Your comparison is a poor one. Chechnya wasn't ever an independent country. They declared independence, but it was never recognized as an independent country by anyone, including any countries in the West.

> Chechnya was an independent country in 1991, as was Ukraine, Moldova, Georgia, Belarus and other ex-USSR republics post 1991.

Chechnya is different from the others; the others were constituent republic of the USSR that became independent when the USSR dissolved; Chechnya was part (and not an administratively distinct part) of the Checheno-Ingush ASSR, which was not a direct constituent of the USSR but of the Russian Soviet Federative Socialist Republic, which became the Russian Federation.