Jan 7 (Reuters) - The following are the top stories from selected Canadian newspapers. Reuters has not verified these stories and does not vouch for their accuracy.
** The federal cabinet is reviewing options to bolster Canada's role in the U.S.-led coalition against the Islamic State that run the gamut from maintaining surveillance and refuelling aircraft to clandestine operations, military and government officials say. (bit.ly/1ZPmbHh)
** North Korea's triumphal declaration that it detonated its first hydrogen bomb drew global condemnation and threats of new sanctions against the isolated nuclear power Wednesday. But it also raised skepticism from the White House and defense experts, who questioned Pyongyang's claim to a new and vastly more destructive weapon. (bit.ly/1PeQu2o)
** Calfrac Well Services Ltd shares dropped sharply on Wednesday following news that the oilfield service company's chief financial officer is departing. (bit.ly/1PgBl0z)
** TransCanada Corp said Wednesday it intends to file a challenge under the North American Free Trade Agreement (NAFTA) seeking $15 billion in damages from the United States government over President Barack Obama's denial of the Keystone XL pipeline. (bit.ly/1TGRIY0) (Compiled by Abinaya Vijayaraghavan in Bengaluru)