
The leaders of France, Germany, the US and UK say there is “no plausible alternative explanation” to Russia having been behind the nerve agent attack in the UK. They condemned the “first offensive use of a nerve agent in Europe since the Second World War”, calling it an assault on UK sovereignty.

British Chancellor Philip Hammond and Foreign Secretary Boris Johnson are scheduled to visit Argentina as part of the G20 ministerial round of meetings in coming weeks, announced UK ambassador Mark Kent following talks on Thursday with foreign minister Jorge Faurie.

Exchanges of information between the Falkland Islands and Argentina about fish and squid stocks could begin again before the middle of this year, if all parties are in agreement. Director of Natural Resources John Barton said: “Dialogue with Argentina on the conservation of shared marine resources has the potential to allow for better management of shared fish stocks and improve sustainability of such stocks.”

A British expert in export certification is visiting Uruguay with the aim of promoting the regeneration British genetics in Uruguayan flocks. In Uruguay there are currently four sheep breeds of British origin: Suffolk, Romney Marsh, Hampshire Down and Southdown, in addition to British Texel.

Test on major brands of bottled water have found that nearly all of them contained tiny particles of plastic. In the largest investigation of its kind, 250 bottles bought in nine different countries were examined. Research led by journalism organization Orb Media discovered an average of 10 plastic particles per liter, each larger than the width of a human hair.

The United Kingdom, Argentina and the Falkland Islands are closer to agreeing on South Atlantic fisheries improved cooperation, for the conservation of shared resources as once existed with regular joint scientific cruises.

The UK will expel 23 Russian diplomats after Moscow refused to explain how a Russian-made nerve agent was used on a former spy in Salisbury, the PM says. Theresa May said the diplomats, who have a week to leave, were identified as “undeclared intelligence officers”. She also revoked an invitation to Russia's foreign minister, and said the Royal Family would not attend the Fifa World Cup later this year.

Counter-terror police are leading an investigation into the “unexplained” death of a man in London. He is believed to be Russian businessman Nikolai Glushkov, who claimed political asylum in the UK after being convicted of fraud.

Irish Prime Minister Leo Varadkar has dismissed claims that people crossing the Irish border would have to pre-register after Brexit. Speaking from the United States, where he is conducting a series of St Patrick’s Day engagements, the Taoiseach said: “No, it is not a solution that we envisage.”

The UK will come to regret its decision to leave the European Union, Brussels’ top official has claimed. European Commission president Jean-Claude Juncker said things “cannot remain as they are” for the UK in its relationship with the EU after leaving the bloc.