A/RES/69/157 Rights of the child variety of constraints and impediments and that the full implementation of this right in many parts of the world has yet to be fully realized, Deeply concerned that children disproportionately suffer the consequences of discrimination, exclusion, inequality and poverty, Deeply concerned also that more than 6,300,000 children under the age of 5 die each year, mostly from preventable and treatable causes, owing to inadequate or lack of access to integrated and quality maternal, newborn and child health care and services, to early childbearing, as well as to health determinants, such as safe drinking water and sanitation, safe and adequate food and nutrition, and that mortality remains highest among children belonging to the poorest and most marginalized communities, Recognizing that a strong focus is needed on poverty, deprivation and inequality to prevent and protect children from violence and to promote the resilience of children, their families and communities, Recognizing also the large and growing number of migrant children, including those unaccompanied or separated from their parents or primary caregivers, and especially those who find themselves in a vulnerable situation by attempting to cross international borders without the required travel documents, Taking into special consideration the situation of child refugees and child asylum seekers, in particular those unaccompanied or separated from their parents, I Implementation of the Convention on the Rights of the Child and the Optional Protocols thereto 1. Welcomes the commemoration of the twenty-fifth anniversary of the adoption of the Convention on the Rights of the Child,1 the human rights treaty with the largest number of ratifications, and acknowledges that the Convention and the Optional Protocols thereto2 contain a comprehensive set of international legal standards for the protection and well-being of children; 2. Recognizes that, while progress has been made, many challenges remain, and that, in this regard, the high-level meeting of the General Assembly on the twenty-fifth anniversary of the adoption of the Convention on the Rights of the Child, on 20 November 2014, was an occasion for States to reflect on implementation gaps and to undertake additional measures to ensure that the rights of children are fully realized; 3. Notes with appreciation the entry into force on 14 April 2014 of the Optional Protocol to the Convention on the Rights of the Child on a communications procedure, 28 and encourages States to consider its accession, ratification and implementation; 4. Reaffirms paragraphs 1 to 10 of its resolution 68/147, and urges States that have not yet done so to consider acceding to or ratifying the Convention on the Rights of the Child and the Optional Protocols thereto as a matter of priority and to implement them effectively and fully; _______________ 28 4/15 Resolution 66/138, annex.