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　　The US and Russia have signed a memorandum of understanding to minimize the risk of theiraircraft coming into accidental contact in the skies above Syria. It comes after severalinstances in which the US accused Russia of unsafe and unprofessional conduct by flying tooclose to its aircraft. A Pentagon spokesman Peter Cook said even a memorandum containedspecific protocols. It calls for aircraft to maintain a safe distance and we have the mostprofessional, capable aircrews in the world, and they operate with professionalism everydayover Syria. We are calling on the Russians to do the same. And these crews are crews certainlyknowing exactly what a safe distanceis and the obligation is upon the Russians to maintainthat safe distance, maintain that professional airmanship just as our crews are displaying rightnow.

　　The Chinese president Xi Jinping has attended the royal banquet at Buckingham Palace at theend of the first four-day of his state visit to Britain. In her speech, Queen Elizabeth describedtheir countries relations as global partnership and called his visit a defining moment. HowardZhang from the BBC's Chinese Service has this analysis of the meeting's significance. Thismeeting is mainly about China agreeing to bankroll almost all of the major infrastructureprojects in the UK for decades to come. Nuclear, high speed railway, technology sector and alsomaking London the main Renminbi or the Chinese currency trading hub which will bring billionsinto London as well as UK economy, all that for a promise that the UK will recognize China as amain cooperative partner on world stage.

　　A scientific study has raised concerns that a deadly strain of a malaria parasite that'sspreading across Southeast Asia could move into Africa. Laboratory experiments have shownthat the parasite which is resistant to the most effective anti-malaria drug artemisinin is ableto infect different mosquito species. Doctor Rick Fairhurst of the National Institute of Health inthe United States, which carried out the research, warned that such a jump could havecatastrophic consequences. We think that these parasites are going to be extremely difficultto stop. The spread out and that just cannot be good for any kind of containment effort. Sowe think that this will provide additional impetus for grossly intensifying the malariaelimination efforts in Southeast Asia.

　　A Cuban graffiti artist called Danilo Maldonado has been released from jail after spending tenmonths in prison for mocking Raul and Fidel Castro. Mr.Maldonado, who was known as El Sexto,attempted to release two pigs painted with the names of the country's current president andformer leader before he was arrested by security officers. Amnesty International says he is aperson of conscience. World news from the BBC.

　　The Mexican authorities are relaunching the investigation into last year's disappearance of 43students in the state of Guerrero. International experts had said the investigation was flawed.One of the experts said there would be a new team of investigators who will make better use oftechnology including drones, satellites, and maps of clandestine graves. They've disputed thegovernment's account that police in Guerrero handed the students over to adrugs cartel whokilled them and incinerated the bodies.

　　Canada's prime minister, elect, Justin Trudeau has declared the country is back on the globalstage after his Liberal Party's landslide election victory. Mr.Trudeau told a rally in Ottawa thatCanada's friends abroad had worried that it has lost compassionate and constructive voiceunder the previous conservative government. In his first telephone conversation withpresident Obama since his victory, Mr. Trudeau confirmed his intention to withdrawCanada's fighter jets from the airstrikes against Islamic State militants.

　　The United Nations says women worldwide have made significant progress since the women'sconference in Beijing 20 years ago. They are in general living longer and better educated. Butmillions face violence and discrimination and women still make up 2/3 of illiterate adults.

　　Scientists say they may have solved the mystery of what makes the belly of a snake soslippery. Our science reporter Johnathan Webb has more details. Snakes are notoriouslyunsettlingly slippery and scientists have known for years that the scales on the animal'sunderbelly are particularly frictionless. Now biologists have worked with chemical engineers tostudy that surface at the molecular level. The scales they say are covered in a thin layer oflubricant and almost makes belly these fatty molecules are lined up in an extremely orderlyfashion as well as offering an explanation for the snake's slimy underbelly. This discovery couldhelp engineers design new low friction pants or coatings that resists wear and tear. And that'sthe BBC news.