World News Update, what you need to know

The US State Department is warning Americans of possible terrorist attacks in Europe this summer, saying targets could include tourist sites, restaurants, commercial centres and transportation.

ELSEWHERE:

CAMP TARIQ, Iraq - Iraqi forces battling their way into Fallujah have repelled a four-hour attack by the Islamic State group in the city's south, a day after first moving into the southern edges of the militant-held city with the help of US-led coalition air strikes.

MOSCOW - Russia has angrily denied its planes had conducted air strikes overnight against the Syrian rebel-held city of Idlib, which the Syrian Observatory for Human Rights said had killed 23 people.

NEW YORK - US Republican presidential candidate Donald Trump has detailed $US5.6 million ($A7.79 million) in contributions he raised for military veterans, while sharply criticising the media for questioning him for months about what happened to the money.

LOS ANGELES, May 31 AP - Johnny Depp's estranged wife has given Los Angeles police a statement to support her account of an alleged domestic violence incident involving the actor, her lawyers say.

ANKARA - A former Miss Turkey has been handed a 14-month suspended prison sentence for insulting President Tayyip Erdogan through a poem she shared on Instagram, the latest of at least a dozen Turks to face such a sentence.