"Open your heart and take action and come up with a shared plan -- that's why I'm here, to honor my brother's family," Teema Kurdi told a press conference outside European Union headquarters in Brussels.
Read: #AylanKurdi: The three-year-old who broke the world's heart
"It's too late for Aylan and Ghalib and Rihana, but it's not too late for thousands of children and their families who risk everything trying to reach safe haven," said Teema, who flew in from her home in Canada.
Teema's brother Abdullah Kurdi buried his three year-old son Aylan, and his other young son Ghaleb and his wife Rihana in the Syrian flashpoint town of Kobane on September 4 after their flight to Europe on a boat ended in tragedy.
Read: Drowned Syrian toddlers and their mother buried in Kobani
"Instead of putting up fences, I appeal to Europe and the world's politicians to open their doors," Kurdi added.
Her visit was organised by the campaign group Avaaz, which circulated a petition with one million signatures calling for action.
Read: Turkish policeman who found Aylan says: 'I thought of my own son'
"Things are not looking great, but what seemed impossible two weeks ago, with the people coming together, with the catalyst effect of Aylan's death, we already see change," Avaaz campaign director Luis Morago said.
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