  The experimental data on $b\to c\tau\bar\nu_\tau$ and $b\to s\ell^+\ell^-$
transitions exhibit sizeable discrepancies with the Standard Model
expectations. We present an overview of the present status and discuss possible
interpretations within a model-independent effective Lagrangian approach. We
also briefly elaborate on some other claimed flavour anomalies such as the
recently observed CP asymmetry in $D^0$ decays or the $K^0\to \pi\pi$ ratio
$\varepsilon_K'/\varepsilon^{\phantom{'}}_K$. The Standard Model prediction for
the direct $CP$-violating ratio $\varepsilon_K'/\varepsilon^{\phantom{'}}_K$
agrees with its measured value, once all theoretical ingredients are correctly
taken into account.
