Euro-federalists and Eurosceptics alike feel vindicated: monetary union cannot work without economic and political unity.
It quotes centre-left opposition leader Francesco Rutelli calling for political unity in a time of crisis for Italy.
Since the idea of African political unity was first pushed - by Kwame Nkrumah, who led Ghana to independence in 1957 - there has been little progress.
The BBC's Justin Webb, in Washington, says the murder has produced a rare moment of political unity amid the increasingly partisan divisions over the abuse of Iraqi prisoners by US soldiers.
Suharto has built a political system on unity and consensus.
For Mormon church founder Joseph Smith bees offered the ideal symbol for unity, political stability and social cohesion.
As a result, Macedonia's political parties, including the ethnic Albanians, recently formed a unity government to seek a political solution.
The BBC's Yolande Knell, in Cairo, says Mr Morsi is hoping that political dialogue can restore national unity but it is not clear who will accept his invitation.
The BBC's Yolande Knell, in Cairo, says Mr Morsi has been hoping that political dialogue can restore national unity amid growing concern about the scale of the latest unrest.
They want to form a very strong political base to support the national unity government.
Obama's call to unity after decades of political division echoed Abraham Lincoln's first inaugural address in 1861.
As a result, the Dutch people tend to look to the royals as symbols of unity in times of turmoil or political division.
Barak said he would not rule out the possibility that he would join a so-called unity government under Sharon to avert political fighting that is now likely in the Israeli parliament, or Knesset.
In fact, they could actually save money by bolstering competitiveness and foster greater unity by isolating fringe groups outside the political mainstream.
But it is the only thing that will work now: all this talk of eurobonds, of fiscal unity, of a deeper and more political Europe: none of them will have any effect in time.
Fanus is a political scientist and a member of Sudan's national unity government.
Col Gaddafi has been promoting his vision of African unity for several years but Africa's political leaders are lukewarm about his vision of a single government.
The balance between the two main parties, the National Liberation Party and the ruling Social Christian Unity Party, has lent the country a political stability that is the envy of its neighbours.
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And even though political leaders have responded by saying they will form a unity government made up of technocrats until new elections are held, more trouble is expected in towns across Tunisia in coming days.
In July 1998 Thaksin abandoned Thailand's political mainstream and founded his own Thai Rak Thai (Thai Unity) Party.
In a rare moment of unity amid Egypt's fractured post-revolutionary political landscape, several divergent political groups called on their membership to protest the ruling.
In a note of unity, Mr Robertson went on to thank his political opponents for the efforts they had made on the referendum so far.
After a year of political polarisation, the floods have created an unfamiliar feeling of national unity.
The president, traditionally a widely respected figure supposed to be above the political fray, can also play a critical role in fostering national unity, which could prove vital now as politicians squabble over how to rebuild Italy's recession-mired economy.
Although there apparently were enough votes to approve the security pact even without the compromise, al-Maliki's government, as well as Shiite and Kurdish leaders, wanted to work out the political reform deal with the Sunni Arabs so there could be national unity on the security pact.
Egyptian President Mohamed Morsy has also invited Abbas and Hamas political leader Khaled Meshaal, who lives in Cairo, to a meeting to discuss Palestinian unity.
In their summit conclusions the EU leaders called on "all political parties in Greece to support the programme's main objectives", saying "national unity is a prerequisite for success".
The main Sunni political bloc, the Iraqi Consensus Front, had pulled out of talks aimed at forming a national-unity government after the shrine bombing, but on Monday it announced that it would rejoin the discussions.
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