Almost 350 migrants are stranded on two boats in the Mediterranean

Migrants stranded aboard the Lifeline rescue ship on Thursday.

(CNN)Almost 350 migrants are stranded on two boats in the Mediterranean, including a Danish cargo ship, as a standoff between nearby European countries deepened on Sunday.

The boats include German rescue ship, Lifeline, which picked up 234 people and 17 crew members off the coast of Libya on Thursday; and a cargo ship operated by Danish transportation company Maersk, which picked up another 113 migrants off the coast of Libya on Friday morning.
Both boats have been barred from docking at nearby Italy and Malta, as the countries urged other European nations to take in the stranded migrants.
    Migrants board the Maersk cargo ship on Friday.
    The standoff comes weeks after Italy and Malta refused to accept another rescue ship, the Aquarius, which was carrying over 600 migrants. After two days drifting in the Mediterranean the migrants were accepted by Spain, exposing the tough new policies of Italy's hardline interior minister and leader of the anti-immigration League party, Matteo Salvini.

    'Dear Salvini, we have no meat on board, just humans'

    Salvini doesn't appear to be backing down on his tough stance anytime soon. Last week he warned the Dutch-flagged ship operated by the German nongovernmental organization Lifeline, currently stranded in the Mediterranean with over 200 migrants on board, not to dock in Italian ports.
    "You (Lifeline) did a show of strength by contravening the indications of the Italian and Libyan coast guard. Now, you'll carry this human load to the Netherlands," Salvini said in a Facebook live video from his office.
    On Sunday, Lifeline responded to Salvini in a Twitter post, saying: "Dear @matteosalvinimi, we have no meat on board, but humans. We cordially invite you to convince yourself that it is people we have saved from drowning. Come here, you are welcome!"

    Maersk answers Italy's call for help

    Similarly, Italy has also refused to allow the Maersk cargo ship, which is carrying over 100 migrants and is located south of Sicily, to dock in its ports. That's despite the Italian Maritime Rescue Coordination Center calling Maersk on Thursday night and asking for it to rescue the migrants, a Maersk spokesman told CNN.
    The cargo ship had been traveling between Libya and Malta at the time, the spokesman said, adding that "it is now denied a port of entry and the company is awaiting further instruction from authorities."
    Migrants board the Danish Maersk cargo ship in darkness on Friday.