Bombers have targeted staff at Israeli embassies in India and Georgia, officials say, with Israel accusing Iran of masterminding the attacks.
Witnesses said a motorcyclist placed a device on an embassy car in Delhi, causing a blast that hurt four people - one seriously. A bomb underneath a diplomat's car in Tbilisi was defused.
Israeli leader Benjamin Netanyahu said Iran was behind both incidents.
But Iranian officials denied the claims as "sheer lies".
One of the victims of the Delhi bombing, the wife of a defence ministry official, was in a "critical but stable" condition, according to AFP news agency. It quoted a doctor as saying she had undergone spinal surgery.
Mr Netanyahu told a meeting of his Likud party MPs that there had been "two attempts of terrorism against innocent civilians".
"Iran is behind these attacks and it is the largest terror exporter in the world," he said.
He also blamed Iran for recent plots to attack Israeli targets in Thailand and Azerbaijan that were prevented.
And he suggested that the militant Islamist Hezbollah movement was also involved.
Israel's foreign ministry said the country had the ability to track down those who carried out the attacks.
But Iranian Foreign Ministry spokesman Ramin Mehmanparast rejected Mr Netanyahu's accusation, calling it "psychological warfare against Iran".
"We condemn any terrorist action and the world knows that Iran is the biggest victim of terrorism," he was quoted as saying by the official Irna news agency.
Earlier, the state's ambassador to India Mehdi Nabizadeh had told Irna: "These accusations are untrue and sheer lies, like previous times."
In a statement, India's Foreign Minister SM Krishna pledged a full investigation, adding: "The culprits will be brought to justice at the earliest."
US Secretary of State Hillary Clinton condemned the attacks, saying the US "stands ready to assist with any investigations of these cowardly actions". UK Foreign Secretary William Hague said he was "shocked and appalled" by the bombings.----
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Tags: Israel, Georgia, India, Iran, diplomats, attacked, terrorism,
Location: New Delhi, Delhi, India (load item map)
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