Xinhua world news summary at 1530 GMT, July 30

Philippine President Rodrigo Duterte lifted Saturday night his unilateral declaration of ceasefire with the leftist rebels and ordered the security forces to be "on high alert."

In a statement released at 7:00 p.m. local time, Duterte said: "Let me now announce that I am hereby ordering the immediate lifting of the unilateral ceasefire that I ordered on July 25 against the communist rebels." (Philippines-Rebels)

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DAMASCUS -- Dozens of Syrian families and armed rebels who surrendered themselves evacuated rebel-held districts in Aleppo Saturday, as part of the government initiative to resolve the situation there, state news agency SANA said.

Dozens of families left eastern Aleppo districts via routes identified as safe passages by the Syrian authorities. (US-Syria-Strikes)

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YEREVAN -- Armenian police detained 165 people here Saturday following clashes between law-enforcement officers and supporters of an opposition group, the state-run Armenpress news agency reported.

Clashes broke out Friday night, not long after demonstrators changed their marching route to approach the Khorenatsi Street. A group of armed men have been barricaded inside a police station there since July 17, demanding the release of jailed opposition leader Zhirair Sefilian. (Armenia-Protest)

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RIYADH -- Saudi forces killed dozens of Houthi militias Saturday at Saudi border city Najran while foiling infiltration attempts in Saudi-Yemeni borders, Al Arabiya local news reported.

The forces, which are leading an Arabic coalition to fight Houthis in Yemen for more than a year, also announced the death of a Saudi officer during the clashes to stop Houthis from entering the Saudi territories. (Saudi-Yemen) Endi