Imagine the house next door is on fire and there is no fire brigade to call on to avert an imminent disaster about to engulf you and your family.
That is how Egypt has viewed Libya since the brutal end of former Libyan leader Colonel Muammar Gaddafi and his regime in 2011.
Libya has no properly functioning state institutions, no unified army or security forces to speak of, and, crucially, no border guards on its side of their porous 1,100km (685-mile) long desert border. Plus the country is awash with weapons.
The fire began to spill over when Libyans failed to agree on a path forward, militias of all kinds proliferated, jihadists resurfaced to pursue their dream of creating an Islamic state in Libya and beyond.
Egypt – whose military overthrew Islamist President Mohammed Morsi in 2013, and jailed him and other leaders of the Muslim Brotherhood – became a prime target:
Post-Gaddafi Libya was quickly caught up in the chasm that has polarised and paralysed politics in nearly the whole of the Middle East and North Africa.
It is the struggle between the advocates of political Islam, foremost among which is the transnational Muslim Brotherhood and its many offshoots, and secular or quasi-secular forces and…