ALSO OF NOTE FROM LIBYA, LEBANON

* Libya has been pushing ahead with its goal of a pro-Libyan united Saharan grouping. Libyan leader Col. Muammar Qaddafi on April 7 urged a pact between Libya, Algeria, Mauritania, and the Polisario Front guerrilla organization of Western Sahara. He also called for unity between Mauritania and the Polisario. Western analysts point out that Algeria, which has been moving into a less radical posture, may be wary of the latter plan since Algeria now occupies part of the Western Sahara.

* At least until the latest flare-up in southern Lebanon, observers were wondering about the strategies in both Israel and the Palestinian guerrillas based in southern Lebanon.

Most of the Israeli air and artillery attacks have been directed against forces controlled by Palestine Liberation Organization (PLO) splinter groups and not at those controlled by the powerful, middle-of-the-PLO-road Al-Fatah military organization. Similarly, PLO attacks on Israel have tended to be less-than-lethal, considering the firepower the guerrillas can muster.

One possible explanation: the shelling has gone on for so long now that it has more of a political than a military significance.

* an upsurge in Armenian activity throughout Europe led Turkey to protested officially to Greece on April 21 over an anti-Turkish demonstration in Athens.

The Turks asked Greece not to allow its territory to be used for acts hostile to Turkey.

* An apparent Soviet rebuff to Egypt's United Nations attempt to win a peace-keeping force for the Sinai Peninsula frontier area with Israel seems to indicate that a multinational, all-Western force may be the only alternative.

The United States has pledged to send troops to Sinai by May 1982 to police the region after the Israelis pull out. Egyptian officials, however, say they still are pursuing efforts to win a UN-sponsore d force.