Dylan Robertson, The Canadian Press

Canada's biggest federal public service union is preparing to ramp up its ongoing strike by moving picket lines to strategic locations such as ports on Monday, as both sides continued to accuse each other of poor communication.

In a Sunday interview with The Canadian Press, Public Service Alliance of Canada National President Chris Aylward said civil servants need to further affect the economy to push Ottawa for a solution.

The pomp and circumstance of a presidential visit will give way today to a series of talks about green energy, migration and Haiti, as U.S. President Joe Biden heads to Parliament Hill.

Prime Minister Justin Trudeau is scheduled to greet Biden late Friday morning for a welcoming ceremony at West Block.

Dignitaries from the House of Commons and Senate, including the Speakers from each chamber and the leaders of each elected party and most Senate groups, are set to join them.

Biden and Trudeau plan to then have a bilateral meeting in the Prime Minister’s Office.

The United Nations is bracing for a further increase in the number of refugees this year, as last month's earthquake in Turkey and Syria adds to a series of crises that has the world looking to Canada for more help.

"The need around the world is enormous," said Kelly Clements, the UN's deputy high commissioner for refugees, on a visit to Canada this week.

"It's the beginning of what we anticipate will be another very difficult year."

Chinese President Xi Jinping has complained to Prime Minister Justin Trudeau about alleged media leaks, and accused him of harming diplomatic relations.

The two had a discussion Wednesday at an event during the G20 summit in Indonesia and media were able to record the brief conversation.

"Everything we discuss has been leaked to the paper; that's not appropriate," Xi told Trudeau through an interpreter.

"That's not how, the way the conversation was conducted. If there is sincerity on your part --" Xi said, at which point Trudeau interrupted.

Prime Minister Justin Trudeau arrived in Bali, Indonesia on Monday for a gathering of leaders from the G-20 countries. 

The world's largest 20 economies meet each year in an attempt to collectively mitigate risks to the global economic system and find progress on issues ranging from climate change to nuclear safety.

As the summit host, Indonesia has asked leaders to focus on shoring up health systems and boosting food and energy security.

Indonesia has stressed the importance of focusing on consensus instead of division, a view at odds with Ottawa.

Foreign Affairs Minister Mélanie Joly urged countries to uphold women’s rights and abortion access on Monday, while Canada announced looming sanctions on Iranian officials over the death of a young woman who was detained by the country's morality police.

In a speech to the United Nations General Assembly, as the global gathering draws to a close, Joly summarized Canada’s priorities and concerns in foreign relations, including by calling for more multilateral solutions to problems like climate change and sexual violence.

Canada is sending a handful of celebrities alongside its official delegation to the queen's state funeral Monday in London, England.

Prime Minister Justin Trudeau, Gov. Gen. Mary Simon and their spouses are leading the delegation, which departs Friday, though it's unclear whether all guests will travel on the same aircraft.

The group will include former governors general Michaëlle Jean and David Johnston as well as former prime ministers Kim Campbell, Jean Chrétien, Paul Martin and Stephen Harper.