mr. arwani was a critic of the government in syria. he had come to britain in the mid 1990s. although he continued to speak out against the regime in damascus, a prominent member of the syrian opposition here told us he didn't believe the killing was political. >> i don't believe it was a political. he's not as active as many in london. >> mr. arwani was 48, and he had six children. until 2011 he was the imam at the mosque not far from here. he leaves behind as well as his family a large number of for students and colleagues still trying to make sense of his killing. >> doctors in liberia say that an ebola treatment center in the capital has been closed because there are no more cases to treat. liberia could be declared ebola-freebie the end of april. >> these people could only hope their celebrations are a little premature. people have received certificates thanking them for their hard work over the recent months. the monument list staff members who were killed by it. now there is a sense the worst may be over. >> we think we have won the fight. and we think now that there i

mr. arwani was a well-known critic of the assad government in syria. he had come to britain in the mid 1990s. although he continued to speak out against the regime in damascus a prominent member of the opposition here told us he didn't believe that the killing was political. >> it is active opposition and member of the community here. he is not as active as many in london. >> mr. arwani was 48, and he had six children. until 2011 he was the imam at the mosque not far from here. he leaves behind as well his family a large number of former students and colleagues still trying to make sense of his killing. >> greek prime minister alexi tsipras is in moscow meeting with president vladimir putin. from moscow rory challands reports. >> alexis tsipras paid his respects at the moscow tomb of the unknown soldier. knowing this is political theater. greece shows europe it has options beyond the euro zone. russia shows the e.u. that it's unity is fragile. even though a greek bailout was not on the cards assistance of other forms was discussed. >> the greek side ha