Latest US and world news, sport and comment from the Guardian | guardiannews.com

Romney cruises to easy victory in Nevada caucuses and widens gap to rivals

Newt Gingrich to meet backers in Las Vegas while Ron Paul and Rick Santorum turn their attention to remaining elections
- Nevada caucus: live results
- Nevada voters on how they made their decision

Fury over vetoed Syria resolution

UK and US condemn Russia and China's refusal to back resolution calling for Syrian president to step down
LA teacher held over suspected abuse

Martin Springer is second teacher to be arrested at Miramonte school over alleged child abuse
Afghan civilian toll hits record high

• 3,021 killed in 2011
• Fifth consecutive rise
• Number of suicide bombings static but toll rises 80%, UN finds
- Soldier's 'kill team' charges dropped
Police raid Occupy Washington camp

Tents that conformed to regulations allowed to stay as officers stress they were not evicting protesters
10 die in Caribbean boat sinking

Dozens missing from vessel carrying migrants from Dominican Republic to Puerto Rico
Stock markets rise on US jobs boost

Dow jumps to post-2008 high, but economists stress households and business remain under severe strain
- David Blanchflower: a tale of two recoveries
U-turn on Planned Parenthood funds

Nancy Brinker apologises for 'recent decisions' and says Komen will honour exisiting grants
- Storify: Komen – the social media backlash
- Amanda Marcotte: Planned Parenthood's PR win
Anonymous hacks FBI and police call

Scotland Yard and FBI investigators can be heard discussing inquiry into cybercrime in call released on the internet
- Video: phone call between FBI and Scotland Yard
- Release of call puts hacker group back centre stage
Anti-Putin protests draw 120,000

Anti-government protesters march through Russian capital as Putin supporters stage counter-rally
- Russians protest against Putin
Iran military exercises raise tension

Revolutionary Guards exercises follow threats by supreme leader Ayatollah Ali Khamenei against US and Israel
- US moves to restrict Iran financing oil exports
Court martial for Bradley Manning

WikiLeaks suspect charged with biggest leak of classified information in US history to face 22 counts
Egyptian protests toll reaches 11

Ten protesters and one security officer killed in Cairo and Suez in aftermath of deadly football violence

Best of the rest

If film posters told the truth ...

Spoof publicity for the 2012 Oscar nominees showing the movies in their true light
- More Film
One previous (famous) owner

Why would anyone want Justin Bieber's jeans or Kevin Spacey's suit? We speak to five people who bought a celebrity cast-off
- More Life and style

Super Bowl 2012

Tom Brady seeks fourth victory

Patriots quarterback has a supermodel wife and three Super Bowl rings, but says 'the next one' will be the best. Will that be against the New York Giants?
- Gronkowski set to play for New England Patriots
Eli Manning: the Giants joker

New York quarterback places himself in the same elite class as rival Tom Brady. And if the Giants win he will have more rings than his brother
Who stars in the new TV ads?

Ferris Bueller, Elton John, Star Wars dogs and Jerry Seinfeld are among the stars of the commercials produced for Super Bowl XLVI
- Half-time: Madonna, Minaj and MIA
Predict the Playoffs

Guardian writers make their predictions for Super Bowl 2012. And you make yours in our Predict the Playoffs game

On the Guardian today

How Sundance came in from the cold

With this year's outstanding crop of documentaries and features, Sundance seems relevant again, writes James Rocchi
- More Film
Risks and rewards for Facebook

Share offer will create new billionaires – but analysts worry about its capacity for growth and many users fear for their privacy
- More Technology
New videos of Andamans abuse

Jarawa girls told to dance semi-naked for the camera as two videos offer fresh proof of official involvement in 'human safaris'
- Proof of Indian police involvement in 'human safaris'
- More World news
Unlikely animal friendships

Monkey and dove = BFFs? A new book shows the remarkable friendships that can exist between wildly different animals
- More Life and style
DIY science: don't try this at home

When Richard Handl was arrested for attempting to split the atom on his stove, he joined a growing band of those cooking up trouble in the kitchen
- More Science
Vanity Fair: secret weapon on show

Jonathan Jones: From Rooney Mara's hair to the art deco set, Mario Testino's shot of '1920s pure beauty' shows the dream factory in full effect
- More Comment is free
Call for 'hit count' to prevent injuries

School-age athletes being subjected to potentially fatal brain trauma in sports like football, hockey and soccer, experts warn
- More Sport