In recent years, for example, both California and North Carolina have held separate primaries.
American officials have refused until now even to take part in preliminary nuclear talks, although the two nations have held separate and limited discussions over security in Iraq.
The negotiations formally began at the State Department, a day after President Barack Obama had held separate talks at the White House with Messrs Netanyahu and Abbas, and at a working dinner attended by King Abdullah of Jordan and the Egyptian leader Hosni Mubarak.
Each year since then, the Socialists and the Communists have held separate commemorations on June 26, Allende's birthday, and on Sept. 4, the anniversary of his election, and Sept. 11.
Israeli media reported that Binyamin Netanyahu, the Israeli prime minister, had held separate meetings with hardline members of his coalition to convince them to accept the outlines of a deal.
Entous's report also notes that, the day before this conversation, McCarthy and Ryan had held separate talks with Ukrainian Prime Minister Vladimir Groysman, in which Groysman talked about how the Kremlin financed populist politicians to undermine democracies in Eastern Europe.
Groups of students in two Tibetan areas of Gansu Province, in western China, have held separate protests after Chinese security forces imposed lockdowns at boarding schools before the anniversaries of previous Tibetan uprisings, according to a report by the International Campaign for Tibet, an advocacy group.
Mr Corbyn said there had been "a confusion" over the meeting, and he had held separate discussions with Mrs May later on.
On Saturday, Turkey's family minister, Fatma Betul Sayan Kaya, was stopped by police as she tried to enter the Turkish consulate in Rotterdam after arriving from Germany, where she had held separate meetings.
