Sentence examples for doubts persist as to whether from inspiring English sources

Doubts persist as to whether Assad will hand over control of his chemical stores, reportedly the largest in the world now that all but a handful of countries have signed the 1993 Chemical Weapons Convention requiring renunciation of the use of poison gases and nerve agents and elimination of any of the weapons on hand.

The combination of endothelial cells with current TE strategies seems the most promising approach but doubts persist as to which type of endothelial cells to use.

To avoid detection it changes frequency almost every day.Doubts persist as to whether the movement can emerge as anything more than a fan club for Mr Thaksin, who is a divisive figure in Thailand.

Questions persist as to whether Floyd will be physically sturdy enough to excel in the NFL.

Contradictions also persist as to whether these factors indeed affect longevity by similar mechanisms in mammals.

The London club are soon to be under new management themselves and have been keen in the past, but their admiration is understood to have long since waned: he would be a No10 in a line-up already boasting Juan Mata, Eden Hazard and Oscar, and, while few query his industry, doubts persist these days as to whether he still has the fluid movement to lead the line on his own.

But doubts have persisted as to the effectiveness of a €48 billion package of budget-reduction measures rushed through the Italian parliament in mid-July.

Legislation requires the Brazilian company to take control of the new operation, but doubts persist among energy analysts as to whether Petrobras, which has soaring debt and is trying to reverse a decline in Brazil's oil production, is overstretched with an array of offshore projects.

Despite intense publicity surrounding the event, doubts persist over whether it will be able to take place.

Bond rating agency Moody's downgraded Greece and while European nations and the IMF are setting up a bailout, doubts persist about whether it will be enough to prevent a default.

However, doubts persist about whether the current pace of US expansion is sustainable, and her $10trillion national debt.