Complex sentence: Israel relations deals with the attitude of the Holy See towards the State of Israel and the diplomatic relations between the two states which were established in 1993 after the adoption of the Fundamental Accord by the two States on 30 December 1993.
Split into simpler sentences: Israel relations deals with the diplomatic relations between the Holy See and the State of Israel. Formal diplomatic relations between the two states were established in 1993 after the adoption of the Fundamental Accord by the two States on 30 December 1993.