Experimental overview of CKM metrology from kaon physics

There is currently a significant tension between the prediction from the unitarity of the first row of the CKM matrix, |Vₔ₃|^2 +|Vₔₒ|^2 + |Vₔ₁|^2 =1, and measurements. This is known as the Cabibbo angle anomaly, with the tension corresponding to around three standard deviations. Precision measurements linked to kaon physics can provide insights into Vₔ₃ and Vₔₒ. In particular, studies of K decays can provide a measurement of Vₔₒ and the ratio between the rates of K^^ and ^^ decays can provide a measurement of the ratio |Vₔₒ|/|Vₔ₃|. Future measurements of these CKM parameters using current and future experiments can play a crucial role in resolving the current tension between observations and the prediction from unitarity. In these proceedings the current state-of-the-art in CKM metrology from kaon physics is presented, and future prospects are summarised.