Since this will soon become heated and full of misinformation, here are some details-
1. PM Trudeau called emergency session over "credible" allegations but no actual evidence. The leader of opposition has also called out lack of evidence.
2. Canada expelled a key Indian diplomat but not nothing more - basically diplomatese - https://edition.cnn.com/2023/09/18/americas/canada-hardeep-s...
3. India issued statement calling allegations as baseless and irresponsible - https://bit.ly/3EHtuwe
4. India too immediately booted out key Canadian diplomat. Diplomat was so angry he almost slammed car door on a journalist (https://x.com/ANI/status/1703997495318352108?s=20)
5. PM Trudeau seems to realize he has worsened relations with no credible evidence - https://www.reuters.com/world/canada-pm-not-trying-provoke-i...
As for background, India considers two countries as those which harbors terrorists active against India - Pakistan and Canada. Canada has harbored "Khalistani" terrorists (https://en.wikipedia.org/wiki/Air_India_Flight_182) for long. Recently these "khalistani" (mind you, not Sikhs) have started threatening Indian diplomats (https://x.com/AdityaRajKaul/status/1676496624519122950?s=20) and attacked Indian properties and temples in Canada/UK. India recently started taking harder stance on push back on both Canada and UK for safety of it's nationals.