"The UK has been through some awful and bad tragedies in the past few weeks and to them, on behalf of this House, we offer our sympathies, solidarity and support", he said.
Although the dust has barely settled on a leadership campaign that only looked like providing one outright victor, the task of turning around Ireland's deepest problems is still on the horizon for Varadkar and his latest decision to move a number of key ministers to different departments could make or break his future as Dail Eireann's top dog.
Mr Ahern, one of the architects of the Good Friday agreement, said that the Unionist party's anticipated support was a positive development that would help deliver a soft Brexit.
During an interview on public broadcaster RTE in January 2015, Varadkar spoke publicly for the first time about being gay.
Ms Madigan said Mr Varadkar was "honest, genuine, with a first-class intellect".
"We also look forward to welcoming him on campus as Taoiseach and for staff and students to meet with him", he added. "It is only by him holding the office that we will see if Deputy Varadkar is willing to make the changes necessary to be successful".
Colum Eastwood said: "The new Taoiseach enters into office when our country is experiencing some of its greatest challenges since the formation of the State. I think that is too restrictive", he said. In a press statement, the Head of the School of Medicine, Prof Paul Browne, said: "We are proud of Leo Varadkar and his achievements".
Trump Denounces Reports Of Widening Russia Probe
Mr Grassley announced the investigation in a letter to California senator Dianne Feinstein, the panel's top Democrat. The report in the Post cited anonymous sources who had been briefed on requests made by Mueller's investigators.
Nadal: 10th Roland Garros win is 'indescribable'
Rafael Nadal captured his 10th French Open title when he overwhelmed Stan Wawrinka 6-2, 6-3, 6-1 on Sunday afternoon. Wawrinka , who lost a grand slam final for the first time, said he had been beaten by a man at the peak of his game.