He abruptly left Moscow to deal with a crisis at home. Martial law could be extended for a year. It will help government forces carry out searches and arrests and detain rebel suspects more quickly. “I have to do it to preserve the republic,” Duterte said. Several militants were killed in the fighting in Marawi city in Lanao del Sur province, about 830 kilometers (520 miles) south of Manila but many others continue acting against official troops. The power was cut in Marawi. Government remains in control of the situation. Duterte met late Tuesday with Russian President Vladimir Putin and said he is counting on Russia to supply weapons for the Philippines to fight terrorism. “We need modern weapons,” Duterte said.