explain tensions between human rights and state sovereignty

human rights refer to a set of entitlements granted to all humans purely for the sake fo being human and for this reason they are absolute and universal. Fusch a notion has clashed strongly with state sovereignty, whereby states hold absolute authority within their borders and such a right is recognised by other states in equal measured. 
If a state is sovereign it thus has absolute authority within its borders - it can do essentially as it pleases, which can and has involved abuses of human rights, hence the clsah. Witness China for instance, which regularly commits human rights abuse, including most recently with the abduction of Hong Kongonese journalists’ clear violation of their right to freedom of expression. In Sudan, the Government and the ‘Janjaweed’ militia have subjected numerous Sundanese to mass violvence, including genoicde
Of course the clash becomes all the more prominent when other states are involved, for such states can act to stop such atrocities through humanitarian intervention, the use of military force and may so sow within a state without its permission, therefore violating its sovereignty, and et human rights have been protected. In Libya, 2011, for instance, a state sovereignty was violated by NATO in order to overthrow the oppressive Gaddafi regime, which was poised to kill its citizens on a mass basis in Benghazi. 
Attempts have been made to reconcile the two concepts through the ‘responsibiltitlity to protect’ or R2P principle, whereby a states right to sovereignty is only granted in so far as it protects its citizens from the grosses of human rights abuses. However, for humanitarian intervention to be initiated through R2P the UN Security’s council approval is need and given that two states who possess permanent membership and veto, China and Russia are especially defensive of the sovereignty principle, which is enshrined in the uN Charter signed in 1948, an article they often point to, such interventions have typically been blocked thus safeguarding sovereignty whilst sacrificing human rights. The two have placed special emphasis on the UN Charter’s principle of non intervention or state sovereignty, including in reference in Sudan,a China veto and where they both vetoed in Syria.