European Union leaders must recognise that the most pressing challenge they face is an internal one — not possible disagreements with Israel, Prime Minister Benjamin Netanyahu’s former national security advisor, Jacob Nagel, told Euronews. His comments come as EU-Israel ties are coming under strain. Earlier this month, Israel’s Foreign Minister, Gideon Sa’ar, severed all contact with the bloc’s foreign policy chief, Kaja Kallas, due to alleged comparisons of Israel to apartheid-era South Africa. Meanwhile, the European Commission is under pressure from some of its member states to propose a range of options to restrict EU trade with illegal Israeli settlements…