President Trump announced that the United States will withdraw from the 1987 Intermediate-Range Nuclear Forces (INF) treaty, after claims Russia is in violation of the agreement. The announcement has sparked concern that the US, Russia and China may be preparing for a new nuclear arms race. Also in the programme: we report from Venezuela where the economy continues to deteriorate; and the heart-breaking obituary for an opioid addict that went viral. Picture: Soviet leader Mikhail Gorbachev (left) and US President Ronald Reagan signing the treaty in 1987. Credit: AFP.

Turkey has said it won't accept a cover-up in the case of the Saudi journalist Jamal Khashoggi, who died inside the Saudi consulate in Istanbul. Newshour speaks to Chair of the US Senate Foreign Relations Committee Bob Corker, and a chief adviser to Turkish President Erdogan. Also in the programme: Afghan voters go to the polls in an election marred by violence; and tens of thousands take to the streets of London to protest against Brexit. Picture: File photo dated 06/12/04 of Jamal Khashoggi, Journalist who was killed at the Saudi consulate in Istanbul. Credit: Johnny Green/PA Wire.

Turkey has vowed to reveal all details about the killing of journalist Jamal Khashoggi, after Saudi Arabia admitted for the first time he had been killed in its consulate in Istanbul. Also in the programme: Afghan voters go to the polls in an election marred by violence; tens of thousands take to the streets of London to protest against Brexit; and the joint European and Japanese BepiColombo mission to Mercury lifts off from French Guiana. Picture: Jamal Khashoggi. Credit: AFP/Getty.

Sir John Sawers believes evidence suggests the killing of Saudi Journalist Jamal Khashoggi was ordered and carried out by people close to Saudi Crown Prince Mohammed bin Salman. Meanwhile police in Turkey have extended their search for the journalist's body to the Belgrad Forest. Also: Mexico has asked the United Nations for help in processing asylum requests from hundreds of Central American migrants and Britain will soon open its first homeless shelter specifically for Lesbian, Gay, Bisexual and Transgender people. (Picture: Saudi Arabia's Crown Prince Mohammed bin Salman at the UN in New York 2018. Credit: Reuters/ Amir Levy).

The killing of a regional police chief in Afghanistan has prompted the Afghan government to postpone key elections in the southern province of Kandahar. Dr Mujib Rahman Rahimi is a government spokesman. Also in the programme: we have a special report from Newshour's James Coomarasamy in Wisconsin ahead of the US mid-term elections. And heading off to Mercury - it'll take seven years to travel nine billion kilometres.

The provincial police chief in Kandahar, General Abdul Raziq, was shot dead after a high-level security meeting attended by US commander General Scott Miller, who escaped unhurt. The Taliban says it was behind the attack. Also in the programme: High profile figures, including US Treasury Secretary Steve Mnuchin, withdraw from a Saudi investment conference after the suspected murder of the Saudi journalist Jamal Khashoggi; and the Reggae Girlz become the first Caribbean football team to qualify for the Women's World Cup. (Photo: Afghan General Abdul Raziq, Police Chief of Kandahar; Credit: AFP / Getty Images)