BUSH WELCOMES SAUDI'S PROPOSAL ON MIDEAST PEACE
Pres Bush, thrusting himself into Mideast peace effort, calls Saudi Crown Prince Abdullah and praises his proposal for Israel to withdraw completely from West Bank and Gaza in return for full normalization of relations with all Arab countries; others in administration are less enthusiastic, undertain how Prime Min Ariel Sharon will view long-term plan at time of intensifying violence; Javier Solana of European Union reports Sharon says idea is interesting; also discusses concept with Yasir Arafat, who sends team to Tel Aviv to discuss curbing violence; some Israeli ministers are heartened by what seems to be first concrete peace signal in 17 months of unmitigated violence (M)
