After his stroke in rough surf, Graham Russell embarked on an unexpected journey into fear. Three lessons helped him return to the joy of the ocean

Looking out over the ocean, I would watch the waves sparkling in the sunlight as they grew and spilled into a burst of froth. It was a fun way to relax, to breathe deep and enjoy an awesome display of energy. But lately it had become exhausting.

In winter last year I tore the lining of an artery in my neck during a rough ocean swim off the Central Coast of New South Wales. It caused a stroke while I was in the water, which saw me scrambling back to shore where a surfer noticed me and sounded the alarm. Six months later, the injury had healed, and my motor functions were all back to normal. But as I prepared for a dip in calm conditions on a sunny day in January, I paused. An unexpected journey into fear began.

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Access to the strait of Hormuz and the future of Iran’s nuclear program are among the issues that remain unclear amid a lack of detail on the agreement

• Middle East crisis: live updates

• Full report: Peace deal between US and Iran announced, with strait of Hormuz expected to reopen

Donald Trump and officials in Tehran have hailed an immediate end to the war on Iran, with the US president claiming that “oil will flow on both ends again for the region, and the world”.

However, in the hours that followed the announcements, exactly what had been agreed remained unclear, with the final text of their memorandum of understanding unpublished and details scant about key issues including access to the strait of Hormuz, Iran’s nuclear program and Lebanon.

US and Iran exchange more strikes but Trump says he is not looking to escalate and there is no need for boots on the ground

• Middle East crisis – live updates

Kuwait’s military said Iranian strikes that hit a terminal at its international airport killed at least one person and wounded 63 in the first deadly attack on the Gulf since a ceasefire on 8 April came into effect.

The US and Iran also exchanged fresh missile and drone strikes, further jeopardising efforts to secure a new ceasefire agreement between Washington and Tehran.

Prime minister to meet mourners in mining town as families speak of their loss in one of Canada’s deadliest mass shootings

Canadian prime minister Mark Carney is to join mourners in Tumbler Ridge on Friday, as authorities and relatives released details of the six children and assistant teacher killed by a shooter in the remote mining town’s high school.

Carney will attend a vigil in Tumbler Ridge in memory of the victims, and he invited leaders from all political parties to join him in the town, the site of the country’s deadliest mass shooting in years.