Riyadh: Egyptian President Abdel Fattah El-Sisi has stressed that the Israeli aggression on the Palestinian and Lebanese territories is unacceptable, threatens the future of the region and the world, and puts the entire international system at stake. According to Qatar News Agency, in a speech during the opening of the Joint Arab-Islamic Extraordinary Summit held in Riyadh on Monday, the Egyptian president condemned the systematic killing campaign being practiced against civilians in the Gaza Strip, explaining that his country will stand "openly against all plans that aim to liquidate the Palestinian cause, whether through the displacement of civilians or their forced transfer or turning the Strip into an uninhabitable place." He pointed out that the necessary condition for achieving regional security and stability is the establishment of an independent Palestinian state on the lines of June 4, 1967, with East Jerusalem as its capital. The Egyptian president affirmed his country's commitment to providing a id to Lebanon, in support of the steadfastness of state institutions, and in an effort to stop the aggression and destruction to which the Lebanese people are being subjected.