Further develop the economy
Given that your industries are all relatively new, there is a lot to be gained from developing them as quickly as possible because the more developed an industry is, the more it stands to gain from global economic integration. That being said, your military capabilities will be no match for the Russians if they choose to invade. The US bloc's security guarantee is still uncertain at this point.
You have chosen a pure economic nationalist approach to developing your economy. Your infant domestic industries will be carefully planned and nurtured. They will also be shielded from international competition. Unfortunately, your economy will not benefit from absolute gains and access to more markets and resources. If your industries develop favorably, then, over time, you will be able to reap relative gains from integrating into an open world economy. In the short term, your refusal to join all of those institutions isolated Chechnya from the US-led capitalist bloc. Therefore, you do not have a security guarantee from a great power.
Your choice to reject the Russian offers and maintain economic investment has resulted in the moderate development of your infant industries.
Recently, two states succumbed to the capitalist bloc's pressure and switched from communist economic systems to capitalist economic systems. This has emboldened Russia. Your decision to not invest in your military means your military has not developed much and does not pose a formidable threat to Russian capabilities. Therefore, your military capabilities are not a deterrent to Russian leaders who deliberate on whether or not to invade Chechnya.
The Russians decide to invade Chechnya. You have developed your economy at the expense of a sufficient national defense or international security guarantee. The Russian military overwhelms your forces and reclaims Chechnya, ending your state's short-lived independence.