His position on Europe means that another coalition with the Lib Dems is impossible, says Steve Richards. Given the likelihood of another hung parliament, that spells danger for him.
2. Cameron may have finished off the Tories – but he had no choice  (Daily Telegraph)
David Cameron's Conservative Party gamble over Europe has been tried before, by Labour. It fatally split the party, writes Peter Oborne.
3. By offering an in/out referendum, Cameron made Ukip stronger  (Independent)
It is Ukip which will be leading the campaign for independence, says Nigel Farage.
4 Can Netanyahu survive Israel's middle-class revolt?  (Guardian)
The election has given Israel a new kingmaker in Yair Lapid, writes Aluf Benn. But Binyamin Netanyahu is a master of survival.
5. From outside, it's clear why Britain has to stay in Europe  (Guardian)
Cameron's speech could have been a lot worse, but five years of anxious uncertainty are bad news for Europe and the world, writes Timothy Garton Ash.
6. Davos: infotainment, not a conspiracy  (Financial Times)
Most people here spend their days debating corporate social responsibility and the global economy, writes John Gapper.
Cameron fulfilled the foremost duty of a Prime Minister by articulating every anxiety felt by his people about Europe, says Max Hastings.
8. In-out EU referendum: Cameron's hokey-cokey  (Guardian)
The real concern of the PM's speech was not economics but politics – the politics of a restive Tory backbench, an insurgent Ukip and a mostly Europhobic press, says a Guardian editorial.
9. At last, voters are trusted to choose Britain’s future  (Daily Telegraph)
David Cameron has given Britain a far better chance of securing a satisfactory settlement with the European Union, says a Telegraph editorial.
10. Our island must stop living in the Tudor past  (Times) (£)
While we celebrate progress over Catholics and the succession we should also ask why we are so slow to change, says David Aaronovitch.