A. Yusuf Ali:Translation:
If two parties among 4927 the Believers fall into a
quarrel, make you peace between them: but if one of
them transgresses beyond bounds against the other
then fight you (all) against the one that transgresses
until it complies with the command of Allah; but if it
complies then make peace between them with justice
and be fair: for Allah loves those who are fair (and
just).

Muhammad Asad:Translation:
Hence, if two groups of believers fall to fighting, 9 make peace between them; but then, if one of the two [groups] goes on acting wrongfully towards the other, fight against the one that acts wrongfully until it reverts to God’s commandment; 10 and if they revert, make peace between them with justice, and deal equitably [with them]: for verily, God loves those who act equitably!
4927 Individual quarrels are easier to compose than group quarrels, or, in the modern world, national quarrels. But the collective community of Islam should be supreme over groups or nations. It would be expected to act justly and try to compose the quarrel, for peace is better than fighting. But if one party is determined to be the aggressor, the whole force of the community is brought to bear on it. The essential condition of course is that there should be perfect fairness and justice and respect for the highest principles; for Islam takes account of every just and legitimate interest without separating spiritual from temporal matters. The League of Nations failed because these essentials were absent and today the United Nations fails for the same reason. (R).