TEL AVIV: An `Israel` Foreign Office spokesman tonight [April 16] rejected the Arab nations` demand for return of Arab refugees as a condition for peace negotiation. He said: `We would welcome some convincing indication of a real desire for peace on the Arab side.` The Arab demand for free return of refugees their sole condition for opening new peace talks with `Israel` ...

came two days age after the seven-nation Arab League`s conference in Cairo. It was the League`s reply to an appeal by the United Nations Palestine Commission for renewed negotiations.

`The claim that any Arab willing to return to `Israel` should be allowed to do so has never been accepted,` the spokesman said. `No party can bind itself in advance to conditions on matters which must be raised, if at all, in the course of the negotiations,` he added.

The `Israeli` spokesman also recalled that Egypt, Syria and the Lebanon were parties to the Arab League Resolution calling for the stiffening of the economic blockade of `Israel` and for the adoption of far-reaching sanctions against any Arab State concluding peace with `Israel.` News agencies