'Will someone please focus on this and explain why."
Because Greece is a guarantor under the 1960 constitution, it is a partner nation in the EU, and it is likely to end up fighting if push comes to shove.
For similar reasons, Greece informs the Cyprus government of developments in the Aegean. Whether we like it or not the line of confrontaion starts at the Greek-Bulgarian-Turkish border and ends at Famagusta. It was Turkey who chose to extend the confrontation and we must follow.