With that in mind, Martin Schulz told a party congress that he wants the European Union to agree to a new constitutional treaty which creates a federal Europe, which can act together in policy in areas including domestic and foreign security, tax and monetary affairs and asylum and worldwide development.
Barely more than a quarter of German Social Democrat voters have backed the idea of forming a new coalition with Angela Merkel before a party debate today about launching talks.
At a previously scheduled party congress, Schulz sought members' approval for a resolution approving talks on "whether and in what form" the Social Democrats can support a new government under Merkel.
'Europe is our life insurance, ' said Schulz. Merkel has said she is "very skeptical" about leading a minority government, which hasn't yet been tried in post-World War II Germany. The leadership's motion "takes no option off the table", he added, making clear it wouldn't automatically lead to a coalition.
Amazon takes Prime to Apple as Google drops YouTube
Then, last month, Amazon pulled Nest's latest devices, including its cheaper thermostat, from its online store. Amazon Prime Video is available now on Apple TV for free.
Schulz, who is formerly the president of the European Parliament, told the conference that he envisioned that by 2025, Europe should be governed by a single federal constitution, which would be the formation of a United States of Europe.
Schulz's center-left party suffered a historic defeat in the German general elections in September this year.
He said the renewal of the SPD can not be placed above the interests of the nation.