(4 of 5)
The answer must begin with cases. Consider Uganda under Idi Amin. Amin was the legitimate ruler when Tanzania invaded and overthrew him. The Tanzanians might say that this was in response to Ugandan border incursions, but Amin had ordered his troops withdrawn more than a month before Tanzania's action. In any case, if repelling a trespass at the border was the problem, Tanzania should have stopped there. It hardly had to drive to Kampala and install the leader of its choice. Tanzania's action, ridding the world of Amin, was a violation of Ugandan sovereignty. It is hard to see how it can be said to be wrong.
Morally speaking--and congressional critics of the Reagan Doctrine are speaking morally, above all--sovereignty cannot be absolute. Indeed, it is not a moral category at all. Why must it be accorded respect, moral respect, in cases where it protects truly awful regimes? The Nazis were the legitimate government of Germany. That does not mean that one is justified in overthrowing any government one does not like. It does mean that one has to face the crucial question: How awful must a government be before it forfeits the moral protection of sovereignty and before justice permits its violent removal?
In Congress today there is almost no opposition to supporting Afghan and (non-Communist) Cambodian rebels. There is a consensus that resistance to invasion warrants support. But by what logic should support be denied to those fighting indigenous tyranny? It seems curious to decide the morality of a cause on the basis of the address of its chief oppressors.
There are more relevant criteria. First, the nature of the oppression and the purposes of those fighting it. The difference between El Salvador and Nicaragua is that in Salvador, a fledgling democracy is under attack from avowed Marxist-Leninists. In Nicaragua, a fledgling totalitarianism is under attack by a mixture of forces, most of which not only are pledged to democracy and pluralism but fought for just those goals in the original revolution against Somoza.
A second important distinction is whether the insurgency is an authentic popular movement or a proxy force cobbled together by a great power for reasons of realpolitik. In both Salvador and Nicaragua, the governments say their opponents are puppets of different imperialisms. In neither case does the charge stick. Consider Nicaragua. As no less a democrat than Arturo Cruz, leader of the (nonviolent) opposition, writes, the contras--"the revolt of Nicaraguans against oppression by other Nicaraguans"--now represent an authentic "social movement." Indeed, they are more than 12,000 strong and growing, even after the cutoff of American aid.
If a revolution is both popular and democratic, it is hard to see the moral objection to extending it support. But there is a practical objection: if every country decided for itself which revolutions to support, there would be chaos. What about the prudential reasons for respecting sovereignty and international law?