The Iron Curtain between Yugoslavia and the Soviet East zipped up tighter yesterday when Rumania announced she too had severed friendship treaties with Tito's country. The formal isolation of Yugoslavia from the East completes except for Czechoslovakia the moves of Poland, Bulgaria, and Hungary, who followed the lead of Russia.

In Washington, the Supreme Court begins its new term today with one new member and another seat vacant. The coming session is expected to make decisions on the powers of the House Committee on Un-American Affairs. Justice William O. Douglas will be absent today because he suffered at least 13 broken ribs and a punctured lung while horseback-riding in the state of Washington yesterday.

The Senate's inquiries into the activities of Washington five per centers probably will not be resumed this year, Senator Clyde Hoey (D-N.C.) said yesterday. Hoey, who heads the investigating sub-committee, said that only unexpected developments would reopen hearings this year.

A wide split opinion raised the possibility yesterday that Congress may delay until next year its final verdict on the handling of Atomic Energy Commission affairs. Congressmen last night forecasted such a wide senate-House division over a draft of the AEO investigation results that it will be impossible to arrive at a majority vote before congress quits.

Thousands of Eastern Germans coming by feet, car and bicycle streamed across the border today to sample the economic plenty of the Western Zones.

The Russians relaxed their border controls at a number of crossing points to encourage Western Germans to participate in gigantic "World Peace Day" demonstrations throughout the Eastern Zone, but only about 500 Germans were reported to have taken advantage of the holes in the Iron Curtain to go East.

The explosive question of religious persecution in the Soviet satellites is scheduled to come before the special political committee of the United Nations Assembly this week.