Chile has pulled out of hosting two major international summits, including a UN climate change conference.
President Sebastian Pinera made the announcement as anti-government protests continue in the country.
He said his government needs "to prioritise re-establishing public order".
The UN is looking into alternative venues for the December's COP25 climate summit and next month's Apec trade forum.
At least 12 killed in Nigeria mining site attack
At least 12 people were killed and three others abducted when gunmen attacked a mining site in Atoso village in Nigeria's restive Plateau state, a local group leader said on Wednesday.
UN, aid groups warn Gaza operations at risk from Israel impediments
The United Nations and aid groups have warned on Wednesday that humanitarian operations in the Palestinian territories, particularly Gaza, were at risk of collapse if Israel does not lift impediments that include a "vague, arbitrary, and highly politicised" registration process.
US approves $11.1 billion arms package for Taiwan, largest ever
The United States has approved $11.1 billion in arms sales to Taiwan on Wednesday, the largest ever US weapons package for the island which is under increasing military pressure from China.
Trump adds seven countries to full travel ban list
President Donald Trump has expanded a list of countries subject to a full travel ban on Tuesday, prohibiting citizens from an additional seven countries, including passports from Syria and Palestine, from entering the United States.
Indian parliament votes to allow private firms in nuclear power sector
The lower house of Indian parliament on Wednesday voted in favour of an atomic energy bill that will allow private participation in the country's nuclear power sector.
