Complex sentence: While both parties reaffirmed their desire for a peace agreement, the Isrselis refused any preconditions to negotiations; the Egyptians on the other hand, refused entering negotiations before Israel had withdrawn their troops from the Sinai peninsula and the 1967 seize-fire lines.
Split into simpler sentences: While both parties reaffirmed their desire for a peace agreement, the Isrselis refused any preconditions to negotiations. The Egyptians on the other hand, refused entering negotiations before Israel had withdrawn their troops from the Sinai peninsula and the 1967 seize-fire lines.