BBC news with Jerry Smit.

President Obama says Sony made a mistake by cancling the release of a film marking the North Korea leader Kim Jong-un under a cyber attack on its computer systems. At the end of the news conference, Mr. Obama said he was sympathetic to Sony's dilemma but wished the corporation had spoken to him first rather than being intimatated. He said the US will respond proportionately.

We just confirmed that was North Korea. We have been working on revenge options. They will be presented to me, I'll make a decision on those based on what I believe is proportional and appropriate to the nature of this attack.

A North Korean diplomat of the UN says his country has nothing to do with this cyber attack.

Turning to Cuba, president Obama defended his decision this week to restore diplomatic relations with the communist state after more than 50 years of hostility. He says that change would come to Cuba but he warned against unrealistc expectations.

This is still a regime that represses its people. Ans as I said when I made the announcement, I don't anticipate overnight changes. President Obama.

Pakistan has executed 2 prisoners following the prime minster Nawaz Sharif's decision to lift moratorium on capital punishment. It came after the massacre at Pershwar school this week. Anbanasan Antirugion has this report.

The hanged militants had no links to this week's Taliban assault on Pershwar. But the execution scheme at the time when there has been an increasing pressure on the government to send out a pathy messege to the militants. One of the man had been convicted of masterminding and an attack on headquarters of the Pakistani army in ?. The other had been found guilty of tring to assasinate the former president Pervez Musharraf. The announcement of the death came just hours after the UN Human rights office appeal to Pakistan to refraining from resuming executions saying this would not stop terrorism.

A Turkish court has issued an arrest warrant for the exile clerical Fethullah Gulen who is seen as the political rival to president Recep Tayyip Erdogan. The president has accused Mr. Gulen of trying to topple him. Mark Lowen reports from Istanbul.

It was expected that after last weekend's arrest of journalists and police linked to Fethullah Gulen, the authorities here would go after the man himself. An arrest warrant has now been issued for the reclusive cleric who's based in US for allegally establishing and running an armed terrorist organisation. Mr. Gulen is blamed by the government for invesgitating massive corruption allegations a year ago that targeted on the then prime minster Recep Tayyip Erdogan and his inner circle which the government said was an attempted coup. Mr. Gulen and his allies denied the allegations saying they were invented by Mr. Erdogan to launch prosecution.

World news from the BBC.

Officials in Colombia say at least 5 soildiers have been killed in clashes between the army and Farc rebel. It happened on the eve of the unilateral ceasefire announced by the Farc which has been hailed as the key step in peace negotiations. The army said Farc fighters had ambushed the patrol in the rural area of ?.

Astronauts on the internatinal space station have used a 3D printer to make a wrench. It's the first that an object designed on earth has been sent digitally to space to be constructed there. Previously, if astronauts need the tool, they could have waited a month for it to be flown up on the regular supply flights. The 3D printer was installed on the space station in November. The founder of the company that makes the printer Mike Chen said it was a chalenge.

We actually tested pretty much every 3D printer available here off the shelving like gravity and none of them worked. So you have to be able to control the material when everything is free-floating. You also have to make them safe when after work on the space staion where there is the enclose environment. You can't really afford pollute that environment with any gasses that were all gathered in plastic.

The Francis and religious order has been hit by financial scandal. Allegedly involving fraud and embezzlement of tens of millions of dollars. The head of the order Michael Perry said an internal investigation had found extensive financial irregularities at Rome-based catholic community which owns churches and convents in more than 100 countries. ? Perry said the order had been left with significant debts and the risk of bankrupacy.

The world's top female marathon runner Rita Jeptoo, a Kenyan has failed a second drug test. The Kenyan athletic federation said that her second example was positive confirming an early test that found traces of banned performance enhancer. Rita Jeptoo as one of the high-profile Kenyan atheltes to fail a doping test.

BBC news.