Italy's new economy minister postponed a meeting with his French counterpart in Paris as their countries traded barbs over the treatment of more than 600 migrants rescued off the Libyan coast at the weekend.
"Such statements are undermining relations between Italy and France," Italy's foreign ministry said in a statement. Macron later appealed for the two sides not to "give in to emotions that certain people are manipulating".
In a speech in the western French town of Mouchamps, he insisted that France was "working hand in hand with Italy" to handle migration.
"If an official apology doesn't arrive, Prime Minister Conte would be right not to go to France," Salvini told reporters.
A French presidential source said the country had not received any formal demand from Italy for an apology.
Italy's new Economy Minister Giovanni Tria said he was cancelling a meeting with his French counterpart Bruno le Maire in Paris. The French economy ministry later said the ministers had "agreed that Mr Tria will come to Paris in the coming days".
European Union member states are divided over how to deal with asylum seekers.
"I think it marks very sensible cooperation that will contribute to reducing illegal migration to Europe," said Kurz, whose country assumes the EU's rotating presidency on July 1. "We believe an axis of the willing is needed to fight illegal migration."
EU leaders in December set an end-June deadline for an overhaul of rules to create a permanent mechanism to deal with migrants.
The International Organisation for Migration yesterday warned against the closing of EU borders.
The country has seen more than 700,000 migrants arrive on its shores since 2013.
Under EU rules, migrants must apply for asylum in the European nation where they first arrive.
Speaking to the Senate today, Salvini accused France of only receiving 640 of the 9,816 migrants it had promised to take from Italy.
He said that between January and May, France had sent 10,249 migrants back to Italy.
He demanded that France move from "words to action and offer a sign of generosity" by taking more in.
Salvini has accused charities that rescue migrants of working with human traffickers but said Italy would not stop rescuing migrant boats itself.
An Italian coastguard ship carrying more than 900 migrants was allowed to dock in Sicily today.
"Closing ports, whoever does it, threatens rescue at sea, as we have seen in the case of the Aquarius, and therefore is not the right solution," UN High Commissioner for Refugees Filippo Grandi told reporters in Geneva.
But he stressed that "the reason why Italy said it had closed ports is something we need to listen to".
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